I get to wave 75, get bombed and lose everything except a gunner with 99 rifle, an AAA with 56, and a sniper. I am still in the game, and am almost completely recovered from it.
A no sound option would be great, and maybe a few more ships inbetween the 201 and 801, gets annoying trying to get 600 kills and all thats inbetween is a mining ship.