The demon boss can be easily beaten by using piericing arrows, just keep on running around with the demons after you and spam piericing arrows, they will all die together!
Okey few tips:
1) Use your strikes only as 'Hell Raisers'. This will keep ur geek up in the air and loose no speed. You will get more strikes as you level up (up to 10 strikes).
2) Level up Creep Magnet first, then Rebound Master, then Party Animal, then Iron Man, and then Like A Boss.
3) Don't use Gold metal untill blacksmith is high level.
5) Challenges really improve your distance because they add skillpoints, extra gold and experience, and teammates which give you special bonuses troughout your geek bashing flight.
6) Challenges: 1. Use right mouse click to 'pauze' the challenge. 2 & 3 are too easy. 4. Use meteor strikes untill 300 speed, then use Hell Raisers to maintain the speed. 5. This one is annoying! Just use Hell Raisers untill you get near clouds, then use meteor strikes to stop the geek from going into a fireball and loose. 6. I somehow managed to complete his one in my first try, so I suppose its easy.
For the people who say its too much grinding, its not. All you do entire game is use your smashes to keep ur geek from the ground, not speed him up. You should get that hard badge within an hour.
Completed level one on extreme pretty much made me feel I was finished playing this game. Only to find out that it doesn't save any progress at all (could be me?). 4/5
To win the last wave (level 20) focus on the groundunits. Kill the first big UFO but don't attempt to kill the other two (the small and big one after that). Just focus on the ground units and you should win the game.
Toad Brothers: If one dies, the other dies as well (so focus only one!). And destroy the totems as soon as possible, they cannot be hurt by (aoe) spells, so you must destroy them with normal attacks.
Like all other said: Too rushed, no hotkeys, too easy, small glitches, didn't save my progress so gotta start all over. Sorry but this could easily been 5/5 but now it's 2/5.
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Good idea ;)