how did your find pubic in mp??
i tried many times also cannot find it. 

personel level i discovered last night has no real indication of skills and team work in this game. you will level up eventually if you played enough. some level 20+ guys play like a totally noob and keep on FFing us and not doing objectives. this is not like CS where you can brag your KDR (that's the point of FPS right?) Helldivers is about the fun of team work and satisfaction of completing the mission as a team. the game is so much fun when your team knows what to do with minimal communication and common sense.

downloadable content

http://store.steampowered.com/app/394510/

lucky for the price error