Pretty cool
Wasn't too bad, one complaint was the overpoweredness of the flame thrower, setting one guy on fire on each side of the screen would result in a giant chain reaction that would kill dozens. Another complaint is the pile didn't build up nearly fast enough, I killed 350 people when I started to get bored and the highest I had gone was 3 or 4 meters.
I also didn't like how the npcs guns would magically pass through their friends, and they would shoot as soon as they appeared on screen which would result in me getting blasted unless i was in the air, which basically met i jumped around constantly taking pot shots with my secondary weapon when I hit the ground. Which brings me to the secondary weapon system which was also kinda weak, more than once I grabbed a Shotty when I just wanted to keep my lazer.
But all in all it was a good game, Decent graphics, good music, and a fun premise. I hope you make more games in the future.