for a first game good

graphics can always be better
metal slug atmosphere keeps originality yet twisted enough to feel different and it feels mixed with skull Dad from Danpaladin.

Pretty decent :)

For your 1st flash game this was pretty kewl :D The graphics were really nice but the gameplay was kinda boring tho nothing new and also it kinda felt like metal slug XD Kudos for making this in As3 :D

Basically, what everyone else said. :P

It's a great game, but the movements need to be a little more fluid, the game as a whole is a bit short, and I found a few "slipping off the platforms" problems.

Other than that, it's a great game! Your first?! Hell yeah! You're on the right track. :D

Great game, but kinda short

For your first game, this is great. The graphics aren't bad, but their not terribly good. But since it's your first, that wont matter much. The gameplay is kinda glitchy, and I often found my self trying to walk forward, but being pushed backwards instead by some invisible force. Also there were moments where it was very lag intensive, and that made it difficult to fight, givin the limited controls. I personally would've liked it better if you could shoot while ducking. Moving on, the biggest point for me was game length. This is a 15.8 mb game, and its 25 mins long? I've played games that were 4-5 mb and they took hours to beat. I find it extremely hard to believe the game is that big, and yet that short and simple. Please add more and make it fit the file size a little better? And as for what Sreith said, all the masks are there, because I found them all and spammed my pistol to 150 dps.

DMC Much?

Graphic : nothing new. I like the desing but it lacks originality. Store Clerk is kewl though!
Music : Not bad. Catchy song for the level and heavy for the sub bosses.
Gamplay : Not the best i've seen. I think you should work on the UI and the mouvements a bit more. Overall it's "ok".

Is this really your first flash game? Because it's pretty well done. If the other maker of this game have more knowledge sure, but it's uncommon to see such detailed perfomance on the first try.

I like your game. Work on it a little more and add some effect. Maybe a quality setting? Voices could be a funny add on with the bosses. Make the girl's chest "bouncy" ? That's my own perverted suggestion, don't mind me =P

Store Clerk could be an interactive character. i mean what if clicking on her produced some side-effect in the game? (Faster mouvement speed, better jumps. etc) with a % of chance happening.

I found some glitches and bugs here and there. Here's a few of them.
When you jump, you can shoot below the ground level.
You can double and triple jump using the rocket launcher and a breakable object.
When you switch weapon very fast and don't release spacebar, you get the infinite rocket with machine gun speed while carrying the gun sprite. Was kewl on the last boss.
The gun glitch can also make the game crash or freeze.
Replaying a level with a bosse will make that boss reappear.
One of the level (not the end level) doesn't have the white mask. Sorry i dont remember which, the game is currently frozen for me atm (too much gun glitche)

I think that's about it. Work on it a little more pal! i'm sure you can get a helluva good game with that!