Dead Space: Extraction

You'll unlock the East Grow Chamber Challenge after completing Chapter 8 of the story mode. The top score is 257,010 so you need more than this to earn the trophy.

As we get further into the levels, making a streak of almost all the enemies becomes less important. 6 levels in, and the top score requirement has gone up by just 6,000. In contrast, the number of necromorphs in the first level was less than 100 yet this level has almost 160. This means a lot more points so getting hit once doesn't mean you need to instantly restart. I got a streak of 71 which gave me 384,083 points. A few streaks of 40's will do the job too though. While the tactic in Overtime Sheet will work fine, for this level I decided to use the Force Gun. There is a simple reason for this, this level contains a lot of containers making ammo less of an issue. I also find that the Flame-thrower can be a bit slow when trying to take out the dark necromorphs, while the Force Gun will happily take out 2 or 3 of those guys in just 3 shots. On top of this every limb is blown off the necromorph meaning you maximise your points. This counterbalances the higher likelyhood of actually taking damage and ruining your streak.