Various Cheats

Press ~ for the console then type in the following codes

allit - All Items & Weapons

gimme all - All Items & Weapons

megaboss - Invincible

satan - Invincible

.jt # - Jump to level . See below for level numbers for #

Levels

41 First Steps
01 Outer Citadel
30 Through the Citadel
10 Middle Castle
33 In the Middle of the Castle
11 The Cathedral
34 The Darker Cathedral
12 The Cemetary
13 The High Castle
14 The Castle Cathedral
17 The Factory
35 The Machine Park
07 The Train Station
08 U-Boat Bunker
32 U-Boat Pen
06 V2 Factory
09 City Ruins
24 The Duel
15 The Time Machine
02 The Future Time Machine
28 Time Machine Facility
05 Underground Channels
31 The Sewers
18 Kraftwerk
03 Droid Factory
19 Computing Center
04 City in the Clouds
16 The Spaceport
29 Docking Bay 94
23 The Flying Fortress

Various Cheats (Cheats also reported this way)
Press ` to activate the console then enter one of the following codes


aim off Disable auto-aiming
aim on Enable auto-aiming
.prezes Invincibility
.wp All weapons and items
.gt or .goto Level select
.did Show frame rate
.diz Remove frame rate