Hotkeys:
'F1' - Regenerate Current Health.
'F2' - Regenerate Max Health.
'F3' - Toggle Always Max Health.
'F4' - Toggle God Mode.
'F5' - Toggle Infinite shield stamina.
Only Arena Mode:
'F6' - One Hit Kill.
'F7' - Toggle Enemy God Mode.
'F8' - Refresh Store and Merchant Inventory. (by gnizamagnikcuf)
'F9' - Gives you lots of money.
Camera (by Rk20):
Numpad '+' - Enable More Zoom and Lower Angle.
Numpad '-' - Reset Camera.