Board Thread:Questions and Answers/@comment-24244308-20131207103815/@comment-212.201.74.89-20140725151249

So far, from what I've done:

Sticky Sap Plant: quite difficult even with some good towers. You really need to be precise with the ability.

Moab Graveyard: gets a lot easier once you got MOAB Mauler. Ice Towers are also quite useful for dealing with the remains.

Tranquil Glade: Was a total joke for me, but might be tough if your Ninja Upgrades are below 4/3.

Shipwreck: Same as Tranquil Glade, easy because my Buccaneers are up 3/3.

Wattle Trees: Piece of cake once you got Bionic Boomers, but quite hard before that.

There is one Consecrated Ground almost in range, but I'll wait for Robos before trying this one.