I'm also not too sure why they felt that the Leprechaun would hide in the only toxic part of the ship, but hey, they pay the price for not thinking things through, as one of the good guys gets his suit sliced by Leppy and ends up morphing into a pile of melted plastic that at least in theory resembles a skeleton. At this point, the Marines decide that their job descriptions certainly didn't entail fighting Warwick Davis. So, they head back to the main room to talk to the Mittenhand Television Set. The Marines don't seem all that shocked about this development, but remember, they've just finished battling with a 3' tall Leprechaun. I think they've spent up all of today's surprise points.
Somebody has to die.
It won't be either of those. Yes, X-E has finally broken out of the smalltime by getting mentioned in Maxim. A blurb with a screenshot from one of my many Star Wars articles. Now, getting back to the movie. Its down to the Leprechaun and a few of the surviving Marines.