Please note, I have not TESTED this all yet, but I'm about to, will edit this post once I do. Right now I'm just straight up reading the decompiled source code.
According to the source code, if you PC name is "JESUSMAC", you have developer mode enabled.
Now, once you have dev mode on -
Ctrl + Shift + H = Enable Cheats (more on that soon)
F6 = quick save
L = Load Previous Game (also in menu)
S = Save Current Game (also in menu)
Cheats Enabled
-------------------------
- = slow game speed
+ = increase game speed
Alt + F12 = Game won? (doesn't seem to work though?)
Ctrl + F = Fog
Ctrl + P = This one is kinda fun. it "pushes" zombies away from your mouse pointer, like your mouse is a big fan
Ctrl + R = Resources
Ctrl + L = Toggle Damage
Ctrl + C = Appears to make all zombies attack the command center. May have to select them to do so
Alt+ R = Toggle Map Resources Visible
Ctrl + F9 = Throw an error!
F9 = Cinematic Mode - Careful! Removes all HUD elements!
Back? = uh... ? ZXLevelState.Current.AddActivity(this._MouseCell, 10000000);
Other notes....
Appears camera zoom is highly modified
EDIT - Updated based on actually testing.