Not great, not terrible.
In a world severely lacking in online Flash games, this game wasn't a bad effort. Definitely works well, better than some others I've seen. Definitely no Stick Arena, but still pretty fun and frantic. The ragdoll when you die was a very nice touch, and I found it amusing to see the funny ways I can die, like an a 3D shooter. Music was alright, kept the action seeming fast. Graphics could have been a bit better; the characters were fine since they needed to be ragdoll, but the maps... are just ugly. Smooth some stuff out a bit in future versions.
If you can, add a feature where if you aim your gun near the edge of the screen, it zooms towards where your aiming when using the sniper rifle. I've seen this in other games before, but I cant remember which.
Nice work, keep it up.