The Engine Room is a level in Terror from Outer Space. Completing this level allows access to the Bean-with-Bacon Megarocket. The creatures you will encounter are Corrupted Vorticon Guards, Corrupted Vorticon Youths, and Bleech Larvas. There is also a Vorticon Grunt in this level. He gives you the hint:
There's a Space Suit hidden in the Weaponary!