pro tip for endless defense, once you have the second heavy gun, the GAU-17, just keep the left click held down, but when there arent any rockets out, move out of the fireing area, this is to save, ammo, when rockets come out just move into the fireing area and blow em to smitherines, do this properly and you can end up with a huge multiplier, easy points and a mess load of xp and cash, and also us the multiplier perk for an extra boost in cash and xp
something i forgot to say in last comment, perhaps a beastiary could be put in?
you know, show health, damge, damage resistance of the enemies after we kill them
there should so be a number 2, with new weapons, enemys, items, and perks
and preferably longer too
that was the only bad thing to me, too short
but otherways, an awsome game, 5/5