Cloakers don't really bother me. Bulldozers, well, an easy kill unless it's a minigun dozer. Tazers? Indeed annoying as hell if there's a bunch of 'em but not as lethal as a cloaker. Medics? Everyone loves the medics. Shields, I hate shields. Will waste your time unless you got something that can pierce through said shield or can blow it up. Captain winters, yes he is terrifying, but I love spamming his entire squad with molotovs. You should have added turrets to this list, I bet most people would vote that. Damn those turrets.