So our cast is:
[list]
[*] 40 something badass who'll run the fuck out of there if the odds are greatly against him.
[*] 20 something sniper who hates new people.
[*] 20 something doctor who gets scared around a lot of people (which isn't claustrophobia, it's social anxiety).
[*] 20 something melee dude who's in need of a mental evaluation.
[*] And a 20 something nerd who doesn't want to be alone.
[/list]
This'll be fun.