You reach another large metal door. It's partially open, revealing light beyond it. Pressing a switch on a nearby wall causes the door to slowly and noisily open, uncovering a bright green landscape and lake beyond. Walking forward, you find yourself in the middle of a small peninsula within a lake surrounded by mountains.
This is not at all what you expected. The "prison" you just exited is now
revealed to be a small, badly-damaged spacecraft. Debris trails
the crash site. The craft itself is wedged halfway into the
ground, forming a crater in the area surrounding it. Walking along a
trail in the foreign terrain, gun in hand, you journey onward to find out
where you are and what you purpose is here.
Observing your surroundings beyond the carnage reveals a beautiful and serene, yet somehow spooky, landscape. Two moons are in the sky. Ruins are in the distance. And a big, bad, alien is eating one of your buddies.
Welcome to UNREAL!