Use these command lines to view the different endings:

A Quick Death ... mainmenu -w:1
Honourable Death ... mainmenu -w:2
Complete Victory! ... mainmenu -w:3
Decompression Ending ... mainmenu -w:4

Hold CTRL and enter widepipe to activate cheats. A message will inform you of the fact. Clear the message and enter a cheat:

Cause error emergency ... CTRL + 2
Speed up game ... SPACEBAR
Undo speed code ... CTRL + Z
Show room number ... CTRL + P
Change global flags ... CTRL + G
Freeze frame on/off ... CTRL + F
Teleport ... CTRL + T <room number>
Move object to location ... CTRL + O Object value range (0 to 54).

Section 1 (Underwater)

• Slippery Pig 101, 102, 103
• Underwater 104, 105, 106, 107, 108, 109
• Cave 110, 111

Section 2 (Island)

• Island South 212
• Island East 208, 209, 203
• Island West 207, 211, 210, 205
• Island North 202, 201
• Witch Doctor 214
• Twinkles 215

Section 3 (Underground City - Medical Complex)

• Capture Scene 301
• Death Scene 304
• Air vent 313
• Interrogation Room 318
• Player's Cell 307 (pre-Havoc)
• Player's Cell 357 (post-Havoc)
• Guard station 311 (pre-Havoc)
• Guard station 361 (post-Havoc)
• Gender Bender 316
• Intersection 354 (post-Havoc)
• Vault room 352 (post-Havoc)
• Teleporter room 351 (post-Havoc)

Section 4 (Underground City - South Annex)

• Scanner Corridors 401, 407
• Other Corridors 405, 406
• Wanda's Bar 402
• Armory 408
• Storage 410
• Laboratory 411
• Teleporter 413

Section 5 (Machopolis Lower)

• Arrive 501, 551
• Security 503
• Software Store/Lab 506, 507, 508
• Restaurant 511, 512
• Elevator 513

Section 6 (Machopolis Upper)

• Bruce's Place 601, 602, 603
• Sea Window 604
• Abdul's Auto 607, 608
• Buckluster Video 609, 610
• Hermit 611
• Williams Bypass 612

Section 7 (Machopolis Rim/Governor's)

• City Rim 751, 752 (before)
• City Rim 701, 702 (after)
• Sea Monster 703
• Bottle 704
• Outside Penthouse 705
• Governor's Penthouse 706

Section 8 (Space Port)

• Control Station 801
• Landing Pad One 802
• Landing Pad Two 803
• Inside Ship 804