"way too hard"? I beat the game without dying once.
In an unrelated note, around round 33 I experienced a glitch where the dead birds and rabbits' corpses stayed on my screen, and didn't respawn that round. It was the round I repaired the truck, though, so it didn't make much of a difference.
I had a lot of fun with this game... That is, until the end, the very end. Specifically, the part where you need to ceiling "jump" to get to the gold door. I kid you not, I spent a half hour on that part before I just said "Screw it". I'm sure there are people who have gotten past this with ease, but for me it just doesn't work. Otherwise, good game.