Dead Space: Extraction

You'll unlock the Water Tunnels Challenge after completing Chapter 8 of the story mode. The top score is 256,010 so you need more than this to earn the trophy.

This is another easy challenge and you can make full use of the tactic explained in Overtime Sheet. I got a streak of 63 which gave me 294,514 points. As with the other levels, a streak of 80-90 or 3 streaks in the high 40's will be enough to reach the required score. This level is the first time you'll meet those annoying necromorphs with the really long and thing neck and a head. They are very fast and are what constantly destroyed my streak so always be ready to fry them as soon as they appear, they take priority. You can always use stasis on them to slow them down but in my experience once they are being burnt, they won't then hit you.