I use rupture, it may not be the most skillful but it's not like I'm trying to prove anything, so f**k da police. It's useful when all the marines decide to camp in one enclosed area (becoming common in survivor), my first intention is to at least do some damage with heavy strike, then let rupture do it's thing. If I try to use spit and aim around the corner to hit them I get blown to bits before I can even release.
As a marine I just use the motion tracker, assume it could be a spitter, and keep my distance as much as possible. A bit difficult when one of my favourite weapons is a shotgun.
In one game of survivor they were camping it out hard so when one marine decided to stray I knocked him down, then I decided to make them pay for the hard camping by just standing over their down comrade. When I got blown apart by a smartgun their buddy was instantly killed. Some satisfying pay back.
