Perfect money farm: Go to Goblin Horde Level, skirmish until you have enough mana to create the turret, set at medium range, advance your maxed out goblins ONLY, and finally set a secondary buffer unit between turret range and castle. Sit back and watch.
This game has more bugs than a trailer park, Diamonds aren't necessary because it wont let you make Divine soldiers... and it always decides to wait until the end to screw up.
Achievements: Hobbit--View instructions & credits. Dwarf--Load up your game 3 times. Bomberman--Lose 3 times. Red Dragon--Lvl. 17 complete. Devil--Lvl. 18 complete. Angel--Research everything.--- start lvl 6 (2) kill the first wave with your tower (3) send hobbits like crazy (4) you just made 6000 xp in 2 minutes (keep these alive)