Not Bad

It was totally a left click to shoot. Apparently, the creator is a lefty. Maybe next time just use the word "click." =P

Was a fun game though.

GOOD!

I got a 378 kill streak!

I think it's good.

Good concept and very fun but it's kinda repeats it self.
I got 237 combo!!!! :)

I find it good

This is a very nice flash. I like the way of shooting that makes it easier to destroy enemies in front of you. You should add a sound( a bit of rock or hard pop to match the feeling of someone shooting everything and to describe a clear adrenaline rush).
Also, you have all the background ready, so you could add levels, you know when you kill all a huge boss appears and you shoot him e.t.c.
Too make the game a lot more interesting, you can add health power ups and at the end of the level you can make the nano bot to earn upgrade points( for armors or stronger lazers) according to the number of enemies.
I hope that you can make a sequel because all these things are very nice. Good luck gameblocks.

Very nice!

Would've appreciated sound (also a high-score table), but there really is nothing wrong with this game, other than the learning curve is a little steep, and the variety of enemies/no upgrades is a problem. Good job!