I am so fucking confused. What the fuck is going on?
Hopefully, you're having fun, and that's what is going on.
If you mean what is going on with the timeline or how Dutch shows up on Mars even if you kill him in the previous level (and he will even give a nod to that happening), then figure it out for yourself.
Then let the rest of us know.
You are Commander Riminah. You are playing out your past over and over again. You put yourself in the Hypnosis Gate, or someone else did it for you, and everything you do is an illusion- a possibility to how events could occur. You are in a self-made purgatory, and the only way to get out is to accept your guilt and wait an eternity until someone breaks you out of your hypnosis. However, it's implied you are in Hypnosis deep in hallowed ground where no one ever dares to tread due to ancient law- so the chances of you being found are slim to none.