Edit your AITD4 desktop or start menu link. It should look like
Put the word wizardmaster one space behind that line so that it looks like
This will enable a hidden cheat menu in the inventory screen. You have the following options there:
Goto...: Lets you warp to the different locations of the game. It's pretty useless 99% of the time (who wants to warp into a room where he needs a certain key to get out?). Tiny SPOILER: For the lazy guys it might become handy during Aline's last third of the game, when she has to change rooms in a short time.
Godmode: Do you really need an epxlanation? Inf. health.
Medikits: Inf. medikits, although only your actual amount is shown (kinda using an invisible one).
WRInf: Weapon Reload inf. Same as with the medikits. Works even if you don't have ammo for that weapon.
Debug Info: ?
BTW, if you replace launch.exe in your link with alone4.exe, the game will start immediately without the (annoying) start menu.