TBF this game has alot of potential and could develop into becoming a great came, yes co-op is definetly needed, online and offline, more guns, more maps and more stuff todo, weapons that you unlock instead of buying can be good makes the game playtime alot more.
so instead of buying weapons when u have the cash u have to get a certain total wave number to unlock weapons or get more kills with a weapon to unlock stuff for that weapon... anyway u probs get my point...
lol, cheesy version of Call of Duty: World At War Nazi Zombie...
could be alot better... upstairs more weapons... e.t.c.
good version if u want to try and beat ur friends whilst at school tho.
Great game 4/5, luv it :D
For last Evolution, i Just keep using melee then gunner melee gunner tank. if u cant afford tank keep going melee then gunner, then get some turrets, this is how i got money up for super troops.