Dead Space: Extraction

Getting 80% Stasis accuracy is a walk in the park. On any Chapter use stasis on a necromorph one time. Make sure you do hit it. Now simply don't use stasis again for the rest of the Chapter and you'll get 100% accuracy. This is best done in the earlier Chapters, as later on you'll find you actually want to make use of it. Try to do this in chapter 1, 2 or 3. To use stasis simply aim at whatever you want to hit and press (DS3) / (Move) to activate it.