Metroid Prime Response to Scenario Game

Samus is in front of her ship, looking down a long hallway with a high ceiling, There is an open doorway directly on her right leading to a ramp that goes down to the left from the doorway. In front of her there is a Snail like creature in a shell that has spikes all over it called a SpikeSlug. It is about 3 yards away and to the left of it is a door with 2 buttons next to it, One pointing down and the other pointing up. The floor is made of a grid of metal strips so you can see through it and the ceiling has a hole in it like something melted through it. Right below that hole there is another one the same way on the floor.