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: Refresh Inventory Editor
     NumPad2: Fly
     NumPad3: No Clip
     NumPad4: Hover Player Higher
     NumPad5: Hover Player Lower
     NumPad6: Increase Player Speed
     NumPad7: Decrease Player Speed
     NumPad8: Set Normal Player Speed
     NumPad9: Decrease Gravity
     Multiply: Increase Gravity
     Add: Set Normal Gravity
     Subtract: Decrease NPC Speed
     Decimal: Increase NPC Speed
     Divide: Freeze NPC
     F1: Set Normal NPC Speed

# Teleport 
     F2: Save Position Slot 1
     F3: Save Position Slot 2
     F4: Save Position Slot 3
     F5: Save Position Slot 4
     F6: Save Position Slot 5
     F7: Restore Position Slot 1
     F8: Restore Position Slot 2
     F9: Restore Position Slot 3
     F10: Restore Position Slot 4
     F11: Restore Position Slot 5

# Game  
     F12: Game Speed

Editor Options

# Inventory 
     Slot 1 - Slot 40

Notes

No Clip:
Doesn't works without 'Fly'.

Inventory' Slot 1 - Inventory' Slot 40
Doesn't works without 'Refresh Inventory Editor'.