the in game power up ( higher fire rate) is a bit useless, because it last just a few seconds and you never find it... i think that either it last longer or it should appear more frequently
why don't you make that hats can help you in training... i mean the propeller hat gives you a +5% each flying training, viking helm in climbing and so on
why don't you add something like a laser beam that kill people and recharge over time or with ppl killed?? like a secondary weapon... and ppl killed by the beam spread some meat...
well it is nice... but as written before a replay and more weapons like granades, rocket-launcher, sniper, double machineguns and others arenas or levels... but the game sounds nice
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i increased its duration =)