Yeah the elevators were kind of broken in Mission 1 - there is a trick in that CD room though: Don't activate the elevator at all as you can hop on those space images on the right and then back onto the elevator platform (as a strange sidenote: If you have activated it once you have to close and restart the game as simply respawning at the beginning won't reset its position)...

I'm not too sure though if the other platform meant to transport you down into the "outside region" is a gamebreaker though as there's no way to get up there again...

It's funny though: Those two games are the most challenging shooters I've played in quite a while...