As you just narrowly escape the demons that killed the rest of your marine squad, you find yourself in a small room. You rest and gain your senses for a while before exiting the room, armed with only your pistol and your fists, and see what you can do to escape Mars.

You are in a room with a window to the right, a hallway down the middle, and a room to the left that has some armor on a stand.

What do you do?