Dead Space: Extraction

You'll unlock the Shuttle Bay 47 Challenge after completing Chapter 9 of the story mode. The top score is 258,010 so you need more than this to earn the trophy.

Yet another level where the tactic explained in Overtime Sheet works wonders. Alternatively the method explained in Herbal Remedies also works well as there are just under 200 necromorphs to this level, a staggering 40 more than the last level, and again the top score only increased by 1000 points. This is an extremely easy level to beat. I got a streak of 80 which gave me 455,050 points.