I think i'm stuck or something... I have won the first mission in the fifth quarter (kill 150 ennemies in 5 minutes) several times but it doesn't really unlock it...
How am I suppose to beat the 19th level ? (collect fire otem hero)
I'm stuck between reds and greens and they keep attacking from the very beginning ! The previous levels were very easy and on this one they beat the crap out of me.
:D 19 is tough, keep your tribe moving and circle around. Remember you only need to collect the totem to complete this island ...