Press [Shift] + [Alt] + D during
game play to enable cheat mode. Then, enter one of the following
codes to activate the corresponding cheat function.

Code
$5,000 [Shift] + [Alt] + 4
Wireframe view F
Level target and other information W
Frame rate and CPU usage T
Alternate view 1 1
Alternate view 2 2
Trainer: All missions unlocked by TNT
Trainer: +1
Trainer: +2 by Hoodlum