My short review of the game.
1. Movement. I find movement in this game... odd. The acceleration system is not new, but as with the last game I saw it in, it doesn't really do anything except make the game a bit more annoying. You can jump the same distance from a standing jump that you can when you're running, at least as far as I can tell. Most of the time it really, really isn't necessary. Like at all.
2. Combat. Combat in this game is tedious. And no, this isn't me just sprouting bad things about the game. But this is one of those stay back and hammer the space bar as many times as you can types of games, which makes killing enemies one of the more boring aspects of the game. On top of that, there is very little incentive to kill enemies after you have sixty lives and 30 antibiotics. You don't get coins or upgrade points. You just sort of... listen to this enemy say something ridiculous and fall over.
4. Length. I think the game is too short. Plus te levels don't really make sense put together. There's nothing wrong with simple games. I love them, in fact, but this just takes simple and turns it up to 11. I do like the stair climbing system in this game though. In older platformers, you'd have to jump up, one to the right, and that would take all day. So I found that very very impressive.
Overall the game isn't terrible. The environments are cool on your first playthrough, but the game leaves little replay value, it becomes bland very quickly, and while some levels do provide a challenge, there's not a lot to really get your blood heated. If the game was redone instead of revived, I think that the game would be fantastic. Some things I'd consider:
Make less killing levels. You're trying to track down this crime boss, but you just kind of run through levels, killing a bunch of things and you just know where to go. Make it so you have to do a bit of investigating. Stealth missions to pick up evidence could be fun.
Do some more with platforming. The last level of the game just felt like 2D Platformer to me. But what only one developer to date has done is make combat and exploration more lateral. Take JLA for example. That's an older game, but even then, enemies would follow you up to rooftops to fight it out, and you could push your enemy down and follow and continue the fight in the streets. Though the system seemed rudimentary, it made the game more addictive than it had any right to be.
And again, I can't stress this enough: MAKE THE GAME LONGER. The game does have it's merits, but again, it's so short and just straightforward that it kind of becomes a time waster later when all other games fail. I don't say that to be mean, I say that to shed light on the fact that the basis for a great game is here, but nothing more. This looks like the bare bones for a much bigger project. Build off of this, change some things around and maybe, if need be, create a new story to make some more things make sense, and this game could be very, very fun and replayable.