Not that hard at all
This game was good time killer,and not that hard at all as you might think from all the negative reviews this got. It might be because that people probably didn't notice the upgradeing after every level, i noticed if after i beat level 3. The music is ok, and the enemies were ok, but i have to agree with most, as they are a bit too hard to kill, even with fully upgraded damage. Overall, this games was OK, maybe a bit repetitive, but i spent over an hour playing this in a row, and that's pretty well done for an flash game.