I've been playing Comix Zone for the Genesis on and off over the past week. I'm improving, but this game is freaking hard. I love the art style and the music, and the character designs are pretty cool. There are multiple paths through each level by choosing different comic panels to enter. They are sort of risk/reward as you may get a power up going one way, but have to fight two enemies instead of one.
However, you get a small health bar, minimal health boosts and there are no continues. And even the weaker enemies require many hits to die. On top of that, you often have to punch or kick your way through something just to get to the next panel in the level, and that takes life away. It's a brutal challenge for sure. But as frustrating as it can get, I'm having a blast with it, so I keep coming back.
I don't know if I'll be able to beat it, but damnit, it's fun trying. The sad part is that when I was a kid, this was a weekend rental and my friend and I beat it. Apparently I was much better at beat em ups when I was 12.