Activating this trainer

If not state otherwise below, press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options

# Player 
     NumPad1: God Mode
     NumPad2: Unlimited Health
     NumPad6: Unlimited Wrenches
     NumPad7: Unlimited Upgrade Reroll
     NumPad8: No Clip
     NumPad9: Fly
     Multiply: Increase Player Speed
     Add: Decrease Player Speed
     Subtract: Set Normal Player Speed
     Decimal: Increase Jump Height
     Divide: Decrease Jump Height
     F1: Set Normal Jump Height
     F2: Set Normal Gravity
     F3: Decrease Gravity
     F4: Increase Gravity
     F10: Save Position Slot 1
     F11: Save Position Slot 2
     F12: Save Position Slot 3
     F13: Save Position Slot 4
     F14: Save Position Slot 5
     F15: Restore Position Slot 1
     F16: Restore Position Slot 2
     F17: Restore Position Slot 3
     F18: Restore Position Slot 4
     F19: Restore Position Slot 5

# Weapons 
     NumPad3: No Reload
     NumPad4: No Recoil
     NumPad5: Rapid Fire

# Enemies 
     F5: Easy Kills
     F6: Freeze Enemies
     F7: Decrease Enemy Speed
     F8: Increase Enemy Speed
     F9: Set Normal Enemy Speed

# Gameplay 
     F20: Game Speed

Editor Options

# Player 
     EXp Multiplier

Notes

God Mode:
It makes you invulnerable to all attacks.

No Reload:
It gives you unlimited ammo.

Freeze Enemies:
It freezes your enemies.

EXp Multiplier:
Don't set this too high otherwise EXp might overflow and game might crash, my advice is to set it back to 1 one your Level is high enough.