* NightmareRetardant: [[http://www.youtube.com/watch?v=x-_MAYUNju0&feature=related In the fourth level]], a dead crew member [[ScareChord suddenly]] slams against the window of your ship. Your character gasps in surprise, which is subtitled as "Wurarrgh"(sic).
* WhatAnIdiot: Doctor Karen Howell deciding to call out [[spoiler: Warren]] for his villainy while alone with him at the same time franticly trying to seal away the necromorphs in the tunnels, providing both the means and the motive to silence her.
** Weller makes a similar mistake. Having come to his own conclusions about [[spoiler: Warren's]] misdeeds, he then ''turns his back to him'' and [[spoiler: is promptly shot]].