Space Quest 2 - Escape Pod
Wait around until you run out of air.
Suddenly, a warning signal draws your attention to the oxygen meter on the front panel. It reads low and dropping fast!
This is just great! You knew it was all too good to be true. You have, maybe, five minutes of air left. Well, Roger Wilco, it was nice knowing you.
Sorry. You've run out of oxygen and are now dead. Your death is a lonely event occurring in an utterly desolate setting. Alone in the knowledge that you have spared Xenon an incredibly horrible fate, you now must deal with the down side of self-sacrifice.
Total number of ways to die: 55