Dang it seems like im getting low pts per game (10-20) compared to everyone else....at this rate the torso will take forever. IS the points largely depended on what you or your team does?

you will get a boost on points when you kill the queen.

Points are given from the group plus individual performace, mostly based on the group.

and if you are going after points, just do waves 1-8.

Yes, the points depend on your team as well as your individual performance: with a good team, you can get at least 30-40 points+ each game, and 60-70+ each game after about wave 5-6.