i stood on a building and could nt be touched

Ya if you wait long enough it will spawn 300 more and they will eat away at the building giving you less of a chance to survive. Its not really supposed to be that exciting, Just something i thought would be fun to try.

I killed many of these guys, but was never able to survive it. I'm not that good at jumping on building roofs. My best strategy seems to be to defend in front of the 2nd or 3rd building from the left, front row. This way blue guys get stuck for quite a while, and you can shoot away in relative safety.

I lol'd when the little guys spawned in this. Really creative!!

Yes, the wave was brilliant. Well-executed theme made up for unforgiving difficulty level.

Arrrrgh ! There's a second wave !