Yes, *that* Ashes Cricket 2013. The one that's basically the next Big Rigs in terms of obvious beta.
To get to the debug menu, first you need to patch a certain file so the game starts in debug mode rather than retail mode.
So just open up your favourite .NET assembly decompiler + patcher (I use Reflector with Reflexil, that's just a personal choice, JustDecompile as a free alternative should work as well), and open up Game_Data\Managed\Assembly-CSharp.dll (thanks a lot Unity for your non-obfuscated easy-to-patch dlls!)
Go to GameEnvironment.isRetail() and patch it to always return false
The CIL for this is:
ldc.i4.0
ret
Then after replacing the original with this patched dll, you can go open up Game.exe and you'll notice something different straight away: debug text on loading screens 
During a game, the ` (backtick) button does THIS:

(click for full size)
You may notice you're stuck in the Unity console. Just click your left mouse button and control should switch to the debug menu, which you can use the arrow keys to navigate. 
Some of the options (instant win, instant lose, instant draw etc) are nicely self-documenting. Others I guess aren't.
Here's a list of debug / slew mode keys, taken from the code, as the game itself has a nice habit of only documenting the xbox 360 controller keys. (Yes, there's plenty of xbox 360 stuff in the code too.)
Looks like you can't use half of slew mode without an xbox 360 controller. Nice, isn't it?
definition.bindingGroups[3].name = "Debug";
definition.bindingGroups[3].subBindingGroups = new DBBindingGroup[0];
definition.bindingGroups[3].digitalInputBinding = new DBDigitalBinding[12];
definition.bindingGroups[3].digitalInputBinding[0].name = "DebugActivateMenu";
definition.bindingGroups[3].digitalInputBinding[0].handlerButtons = new DBDigitalInputOption[2];
definition.bindingGroups[3].digitalInputBinding[0].handlerButtons[0].controllerCode = ControllerButtonCode.DPad_Left;
definition.bindingGroups[3].digitalInputBinding[0].handlerButtons[0].keyCode = KeyboardKeyCode.BackQuote;
definition.bindingGroups[3].digitalInputBinding[0].handlerButtons[1].controllerCode = ControllerButtonCode.Y_Triangle;
definition.bindingGroups[3].digitalInputBinding[0].handlerButtons[1].keyCode = KeyboardKeyCode.None;
definition.bindingGroups[3].digitalInputBinding[0].evaluationMode = DBInputDefinition.DigitalevaluationMode.And;
definition.bindingGroups[3].digitalInputBinding[0].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[1].name = "DebugAutoBowl";
definition.bindingGroups[3].digitalInputBinding[1].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[1].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[1].handlerButtons[0].keyCode = KeyboardKeyCode.Z;
definition.bindingGroups[3].digitalInputBinding[1].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[1].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[2].name = "DebugAutoBat";
definition.bindingGroups[3].digitalInputBinding[2].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[2].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[2].handlerButtons[0].keyCode = KeyboardKeyCode.X;
definition.bindingGroups[3].digitalInputBinding[2].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[2].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[3].name = "DebugResetDelivery";
definition.bindingGroups[3].digitalInputBinding[3].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[3].handlerButtons[0].controllerCode = ControllerButtonCode.Back_Select;
definition.bindingGroups[3].digitalInputBinding[3].handlerButtons[0].keyCode = KeyboardKeyCode.Backspace;
definition.bindingGroups[3].digitalInputBinding[3].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[3].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[4].name = "DebugFieldingToggle";
definition.bindingGroups[3].digitalInputBinding[4].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[4].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[4].handlerButtons[0].keyCode = KeyboardKeyCode.C;
definition.bindingGroups[3].digitalInputBinding[4].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[4].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[5].name = "EndFlythrough";
definition.bindingGroups[3].digitalInputBinding[5].handlerButtons = new DBDigitalInputOption[3];
definition.bindingGroups[3].digitalInputBinding[5].handlerButtons[0].controllerCode = ControllerButtonCode.A_Cross;
definition.bindingGroups[3].digitalInputBinding[5].handlerButtons[0].keyCode = KeyboardKeyCode.Return;
definition.bindingGroups[3].digitalInputBinding[5].handlerButtons[1].controllerCode = ControllerButtonCode.B_Circle;
definition.bindingGroups[3].digitalInputBinding[5].handlerButtons[1].keyCode = KeyboardKeyCode.Escape;
definition.bindingGroups[3].digitalInputBinding[5].handlerButtons[2].controllerCode = ControllerButtonCode.Start;
definition.bindingGroups[3].digitalInputBinding[5].handlerButtons[2].keyCode = KeyboardKeyCode.None;
definition.bindingGroups[3].digitalInputBinding[5].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[5].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[6].name = "DebugChangeBatLeft";
definition.bindingGroups[3].digitalInputBinding[6].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[6].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[6].handlerButtons[0].keyCode = KeyboardKeyCode.O;
definition.bindingGroups[3].digitalInputBinding[6].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[6].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[7].name = "DebugChangeBatRight";
definition.bindingGroups[3].digitalInputBinding[7].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[7].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[7].handlerButtons[0].keyCode = KeyboardKeyCode.P;
definition.bindingGroups[3].digitalInputBinding[7].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[7].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[8].name = "DebugChangeBatsmanGlovesLeft";
definition.bindingGroups[3].digitalInputBinding[8].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[8].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[8].handlerButtons[0].keyCode = KeyboardKeyCode.K;
definition.bindingGroups[3].digitalInputBinding[8].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[8].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[9].name = "DebugChangeBatsmanGlovesRight";
definition.bindingGroups[3].digitalInputBinding[9].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[9].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[9].handlerButtons[0].keyCode = KeyboardKeyCode.L;
definition.bindingGroups[3].digitalInputBinding[9].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[9].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[10].name = "DebugChangeBatsmanPadsLeft";
definition.bindingGroups[3].digitalInputBinding[10].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[10].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[10].handlerButtons[0].keyCode = KeyboardKeyCode.H;
definition.bindingGroups[3].digitalInputBinding[10].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[10].repeatTime = 0f;
definition.bindingGroups[3].digitalInputBinding[11].name = "DebugChangeBatsmanPadsRight";
definition.bindingGroups[3].digitalInputBinding[11].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[3].digitalInputBinding[11].handlerButtons[0].controllerCode = ControllerButtonCode.None;
definition.bindingGroups[3].digitalInputBinding[11].handlerButtons[0].keyCode = KeyboardKeyCode.J;
definition.bindingGroups[3].digitalInputBinding[11].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[3].digitalInputBinding[11].repeatTime = 0f;
definition.bindingGroups[3].analougeInputBinding = new DBAnalougeBinding[0];
definition.bindingGroups[4].name = "Slew";
definition.bindingGroups[4].subBindingGroups = new DBBindingGroup[0];
definition.bindingGroups[4].digitalInputBinding = new DBDigitalBinding[9];
definition.bindingGroups[4].digitalInputBinding[0].name = "SlewCancel";
definition.bindingGroups[4].digitalInputBinding[0].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[0].handlerButtons[0].controllerCode = ControllerButtonCode.B_Circle;
definition.bindingGroups[4].digitalInputBinding[0].handlerButtons[0].keyCode = KeyboardKeyCode.Escape;
definition.bindingGroups[4].digitalInputBinding[0].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[0].repeatTime = 0f;
definition.bindingGroups[4].digitalInputBinding[1].name = "SlewIncreaseSpeed";
definition.bindingGroups[4].digitalInputBinding[1].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[1].handlerButtons[0].controllerCode = ControllerButtonCode.DPad_Up;
definition.bindingGroups[4].digitalInputBinding[1].handlerButtons[0].keyCode = KeyboardKeyCode.UpArrow;
definition.bindingGroups[4].digitalInputBinding[1].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[1].repeatTime = 0.1f;
definition.bindingGroups[4].digitalInputBinding[2].name = "SlewDecreaseSpeed";
definition.bindingGroups[4].digitalInputBinding[2].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[2].handlerButtons[0].controllerCode = ControllerButtonCode.DPad_Down;
definition.bindingGroups[4].digitalInputBinding[2].handlerButtons[0].keyCode = KeyboardKeyCode.DownArrow;
definition.bindingGroups[4].digitalInputBinding[2].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[2].repeatTime = 0.1f;
definition.bindingGroups[4].digitalInputBinding[3].name = "SlewIncreaseFOV";
definition.bindingGroups[4].digitalInputBinding[3].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[3].handlerButtons[0].controllerCode = ControllerButtonCode.DPad_Right;
definition.bindingGroups[4].digitalInputBinding[3].handlerButtons[0].keyCode = KeyboardKeyCode.RightArrow;
definition.bindingGroups[4].digitalInputBinding[3].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[3].repeatTime = 0.1f;
definition.bindingGroups[4].digitalInputBinding[4].name = "SlewDecreaseFOV";
definition.bindingGroups[4].digitalInputBinding[4].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[4].handlerButtons[0].controllerCode = ControllerButtonCode.DPad_Left;
definition.bindingGroups[4].digitalInputBinding[4].handlerButtons[0].keyCode = KeyboardKeyCode.LeftArrow;
definition.bindingGroups[4].digitalInputBinding[4].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[4].repeatTime = 0.1f;
definition.bindingGroups[4].digitalInputBinding[5].name = "SlewFall";
definition.bindingGroups[4].digitalInputBinding[5].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[5].handlerButtons[0].controllerCode = ControllerButtonCode.RightBumper_R1;
definition.bindingGroups[4].digitalInputBinding[5].handlerButtons[0].keyCode = KeyboardKeyCode.None;
definition.bindingGroups[4].digitalInputBinding[5].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[5].repeatTime = 0f;
definition.bindingGroups[4].digitalInputBinding[6].name = "SlewRise";
definition.bindingGroups[4].digitalInputBinding[6].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[6].handlerButtons[0].controllerCode = ControllerButtonCode.LeftBumper_L1;
definition.bindingGroups[4].digitalInputBinding[6].handlerButtons[0].keyCode = KeyboardKeyCode.None;
definition.bindingGroups[4].digitalInputBinding[6].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[6].repeatTime = 0f;
definition.bindingGroups[4].digitalInputBinding[7].name = "SlewPauseToggle";
definition.bindingGroups[4].digitalInputBinding[7].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[7].handlerButtons[0].controllerCode = ControllerButtonCode.RightStick;
definition.bindingGroups[4].digitalInputBinding[7].handlerButtons[0].keyCode = KeyboardKeyCode.None;
definition.bindingGroups[4].digitalInputBinding[7].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[7].repeatTime = 0f;
definition.bindingGroups[4].digitalInputBinding[8].name = "SlewUnrollCamera";
definition.bindingGroups[4].digitalInputBinding[8].handlerButtons = new DBDigitalInputOption[1];
definition.bindingGroups[4].digitalInputBinding[8].handlerButtons[0].controllerCode = ControllerButtonCode.LeftStick;
definition.bindingGroups[4].digitalInputBinding[8].handlerButtons[0].keyCode = KeyboardKeyCode.None;
definition.bindingGroups[4].digitalInputBinding[8].evaluationMode = DBInputDefinition.DigitalevaluationMode.Or;
definition.bindingGroups[4].digitalInputBinding[8].repeatTime = 0f;
definition.bindingGroups[4].analougeInputBinding = new DBAnalougeBinding[6];
definition.bindingGroups[4].analougeInputBinding[0].name = "SlewForward";
definition.bindingGroups[4].analougeInputBinding[0].axisNames = new DBAnalougeInputOption[2];
definition.bindingGroups[4].analougeInputBinding[0].axisNames[0].controllerCode = "LeftStick_Y";
definition.bindingGroups[4].analougeInputBinding[0].axisNames[1].controllerCode = "KBMKeyboardLeftStickWS";
definition.bindingGroups[4].analougeInputBinding[0].evaluationMode = DBInputDefinition.AnalougeevaluationMode.Highest;
definition.bindingGroups[4].analougeInputBinding[0].deadZone = 0.075f;
definition.bindingGroups[4].analougeInputBinding[1].name = "SlewSide";
definition.bindingGroups[4].analougeInputBinding[1].axisNames = new DBAnalougeInputOption[2];
definition.bindingGroups[4].analougeInputBinding[1].axisNames[0].controllerCode = "LeftStick_X";
definition.bindingGroups[4].analougeInputBinding[1].axisNames[1].controllerCode = "KBMKeyboardLeftStickAD";
definition.bindingGroups[4].analougeInputBinding[1].evaluationMode = DBInputDefinition.AnalougeevaluationMode.Highest;
definition.bindingGroups[4].analougeInputBinding[1].deadZone = 0.075f;
definition.bindingGroups[4].analougeInputBinding[2].name = "SlewLookVertical";
definition.bindingGroups[4].analougeInputBinding[2].axisNames = new DBAnalougeInputOption[1];
definition.bindingGroups[4].analougeInputBinding[2].axisNames[0].controllerCode = "RightStick_Y";
definition.bindingGroups[4].analougeInputBinding[2].evaluationMode = DBInputDefinition.AnalougeevaluationMode.Highest;
definition.bindingGroups[4].analougeInputBinding[2].deadZone = 0.075f;
definition.bindingGroups[4].analougeInputBinding[3].name = "SlewLookHorizontal";
definition.bindingGroups[4].analougeInputBinding[3].axisNames = new DBAnalougeInputOption[1];
definition.bindingGroups[4].analougeInputBinding[3].axisNames[0].controllerCode = "RightStick_X";
definition.bindingGroups[4].analougeInputBinding[3].evaluationMode = DBInputDefinition.AnalougeevaluationMode.Highest;
definition.bindingGroups[4].analougeInputBinding[3].deadZone = 0.075f;
definition.bindingGroups[4].analougeInputBinding[4].name = "SlewRotateLeft";
definition.bindingGroups[4].analougeInputBinding[4].axisNames = new DBAnalougeInputOption[1];
definition.bindingGroups[4].analougeInputBinding[4].axisNames[0].controllerCode = "LeftTrigger";
definition.bindingGroups[4].analougeInputBinding[4].evaluationMode = DBInputDefinition.AnalougeevaluationMode.Highest;
definition.bindingGroups[4].analougeInputBinding[4].deadZone = 0.075f;
definition.bindingGroups[4].analougeInputBinding[5].name = "SlewRotateRight";
definition.bindingGroups[4].analougeInputBinding[5].axisNames = new DBAnalougeInputOption[1];
definition.bindingGroups[4].analougeInputBinding[5].axisNames[0].controllerCode = "RightTrigger";
definition.bindingGroups[4].analougeInputBinding[5].evaluationMode = DBInputDefinition.AnalougeevaluationMode.Highest;
definition.bindingGroups[4].analougeInputBinding[5].deadZone = 0.075f;
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