Okay, here goes...
The game is a great concept, really, but there are a few problems I'd like to address. The game is great. It took time to get used to the controls, but not too bad. The main problem the fact that enemies can kamikazi you to death, health from baddies ends are too high when you kill them from the roof and those that do fly, and the fact that, well, the boss fights are not that much challenging. After the first game, all the bosses are all too predictable, and once you fight one, your like "Gee, I wonder how he will move this time..."
The graphics, on the other hand, are not bad. Brings in the whole "retro" thing, and is quite enjoyable. The flames in the building, however, were just too silly.
Looking forward to the next game.