What other cool stuff is there?

Hint 1 of 5:

(1) At the beginning, turn around, and check out your ship for an RPG.

Hint 2 of 5:

(2) Where you find the switch to open the first door, there's a room behind
the broken monitor screens.

Hint 3 of 5:

(3) Check in the dark room that you find the blue card in for a vent that
leads to some interesting places.