I've seen this before, and isn't NG PASS 3 on the front page? It's almost the exact same concept as this.
Very good game, the ending was a twist to the usual. Having to lead the shots was a good feature. The one problem I had was the railgun. I couldn't figure out how it worked.
Best of Newgrounds
The only thing I dont like about it is that here is no range attacks. There are many good thinks about it, even after playing it for a few hours.
Most characters have a ranged attack. It's just that you have to collect the pickup that looks like an AK-47. I agree that some readily available projectiles could spice things up though.
newgrounds.com — Your #1 online entertainment & artist community! All your base are belong to us.