lol i got to wave 105 with 500-600 kills :D
Main goal is to have 4 soldiers, 1 officer, 1 engineer, 1 signaller, 1 medic and 1 tank and rest is just easy... Though it depends what you get from the crates.
Also how does my character rank up? (like becomes a captain or smth)
 "me and the key"){kind=icon}
 "Mud and Blood 2"){kind=icon}
 "Sonny"){kind=icon}