ultimate team: have a thrower at the back (have the +15 hp, throwing arm, and the bouncer) throwing smelly socks and chainsaw as secondary weapon. have 2 melee guys at front. one with tv and chainsaw. the other with lead pipe and chainsaw. give the 2 melee guys max hp buffs and melee defense
i beat the cells mission in about 10 minutes. just build 3 mortars asap (1 near the middle to cover the two pools at the middle and one on the left wall and one on the right wall) and they should hold them back for a loong time. then expand your collector network, build blasters, and inch forward to the totems, its really easy and quick and i dont know why people are having so much trouble with it.