I have 3 shotguns now, and then the rest is all the starter crud.
I had been running soldier until you joined in Doc, and then I switched to Sentinel. Those were the classes I used in the game. I maxed out Fitness after we finished last night. I am close to maxing out something else, I don't remember what though.
I had some points laying around so I bought the top tier Crate, whatever the name, I didn't get anything worthwhile except a headshot mod for heavy pistols.
I also put a smattering of points into all of the abilities for Soldier and Sentinel so that I could at least use grenades or Warp, etc....
All told I felt bad about not really helping. Hell Doc I saw 3 seperate messages stating you had revived me 15+ times per match.