Board Thread:Questions and Answers/@comment-24.27.90.187-20140125015142/@comment-10824019-20140326025730

The Flamethrower (and the Tesla Generator), are very effective in Survival. The damage output is pretty much the same as well.

Agreeing with the guy above though, Rocket Launchers is where it's at. If you got the money for Apocalypse 3000, Nuclear Launcher, or Armageddon, go for it. I've used it a hundred times, and managed to burn up to Wave 45 in 2 hours with the thing! Also have managed to rack up over 300+ coins with it too! Trust me, you will not regret buying the Apocalypse 3000 and/or its upgrades.