Duty Hill not bad
it's a good game but it needs a little bit more of a chalange. I mean i got the sniper and after that i only used that i only bought the other stuff fot the achievement.
But it's way too easy.
But overall its good make a nuther one with.: More guns, More enemies (types like: pistol, submachinegun, motarers, snipers etc) more upgrates. Also a way to turn money into poinst to upgrate weapons.