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: Unlimited Health
     NumPad2: Unlimited BP
     NumPad3: Unlimited Spells and Items
     NumPad4: Prevent Spell and Item Depletion 
     NumPad5: Weak Enemies
     NumPad6: Unlimited Overdrive
     NumPad7: Fly
     NumPad8: No Clip
     NumPad9: Hover Player Higher
     Multiply: Hover Player Lower
     Add: Change Player Speed
     Separator: Increase Player Speed
     Subtract: Decrease Player Speed
     Decimal: Set Normal Player Speed
     Divide: Change Player Jump Height
     F1: Increase Jump Height
     F2: Decrease Jump Height
     F3: Set Normal Jump Height
     F4: Change Player Gravity
     F5: Decrease Gravity
     F6: Increase Gravity
     F7: Set Normal Gravity
     F8: Change NPC Speed
     F9: Decrease NPC Speed
     F10: Increase NPC Speed
     F11: Freeze NPC
     F12: Set Normal NPC Speed

# Teleport 
     F13: Save Position Slot 1
     F14: Save Position Slot 2
     F15: Save Position Slot 3
     F16: Save Position Slot 4
     F17: Save Position Slot 5
     F18: Restore Position Slot 1
     F19: Restore Position Slot 2
     F20: Restore Position Slot 3
     F21: Restore Position Slot 4
     F22: Restore Position Slot 5

# Game  
     F23: Game Speed

Notes

Unlimited Spells and Items:
It doesn't works for all of the items.

Change Player Speed:
Increase Player Speed:
Decrease Player Speed:
Set Normal Player Speed:
It effects the player team however it doesn't effects the attack speed.

Change NPC Speed:
Decrease NPC Speed:
Increase NPC Speed:
Freeze NPC:
You might be able to freeze the enemies during combat but they can still attack.

Save Position Slot 1:
Save Position Slot 2:
Save Position Slot 3:
Save Position Slot 4:
Save Position Slot 5:
Restore Position Slot 1:
Restore Position Slot 2:
Restore Position Slot 3:
Restore Position Slot 4:
Restore Position Slot 5:
It works only for the main player and outside of battles.