PSX Final Doom story

Master Levels ending
You have assaulted and triumphed over the most vicious realms that the demented minds of our designers could devise. The havoc you left behind you as you smashed your way through the master levels is mute tribute to your prowess. You have earned the title of Master of Destruction.

TNT: Evilution
Suddenly all is silent from one horizon to the other. The agonizing echo of hell fades away. The nightmare sky turns blue. The heaps of monster corpses being to dissolve along with the evil stench that filled the air. Maybe you have done it. Have you really won...

The Plutonia Experiment
You gloat over the carcass of the Guardian. With its death you wrested the accelerator from the stinking claws of Hell. You are done. Hell has returned to pounding dead folks instead of good live ones. Remember to tell your grandkids to put a rocket launcher in your coffin. If you go to Hell when you die you will need it for some cleaning up.