Good concept between the helicopter level, the outside, and the inside. It's ok with this difficulty for those who want a shooting gallery game without much challenge, but it'd be nice to have some difficulty settings and maybe a boss or some big zombie like a Titan that shows up once in a while.
The fast zombies are a nice way to keep you on your toes, but they pause before they attack giving you more than enough time to react to them. The shooting zombies were the only thing that ever hit me.
I might do ammo on the pistol and definitely fewer health packs. Maybe a melee weapon to balance out if you do scarcer ammo.
Way too easy on current layout. Should limit it to two button. I mapped blizzard, fireball, icebolt (z,x,c) and just ranked the ice tree. By just contiuously tapping x and c I could lay down a continuous field of fire that mowed down everything and then blizzard when the screen got full or bats came from the side. Limiting to two buttons (z, x) would up the difficultly significantly. But great start.
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