Ruff n Tumble
Now this is a great game but the fact that when you shoot diagonally while standing on a slope, the bullets dont fire at the same angle as the slope, just ruins it for me. If youre standing on a slope facing downwards (or upwards) and trying to shoot an oncoming baddie, your bullets shoot into the ground a short distance in front of you. This means that you have to wait until the baddie is virtually on top of you before you hit it.
This was either a major oversight by the developers or a stupid decision.
Such a shame, I think it'd be in my top 5 if not for this one annoyance.