Since everyone forgot ragenrokios' comment (including me), I'll partially recap it here...
Level 1: Move Left-Right-Left-Right... etc.
Level 2: Move Up-Down-Up-Down, wait for the thingy to shake before moving.
Level 3(Not sure if it goes here but the one with the 6 cannons.): Move in an infinity like shape.
Level 4: V-shape formation, Move TopLeft-Bottom-TopRight-Bottm, etc. Same rule as for 2.
Level 5: Just Dodge, this level is too random for strategy.
Level 6: Move in a triangle formation, it's alot more complicated then that but hard to describe.
Level 7: Stick to the very centre and keep your reflexes sharp, as soon as the snake appears circle around it. When it dissapears repeat.
Level 8: Most people lose here or atleast lose a life, just go crazy and hope you don't hit anything is the best advice I have...
Things I think would be better in this game, a more natural control system, a mode where instead of moving towards the notes the notes move towards you (this would make mouse mode more viable and a mode where you don't have the "jumps".
@tiger, he might of already been poisoned and then died when he saw the idle dummy but thought it was the idle dummy that killed him, therfore you shouldn't be killing the poor helpless idle dummys and instead that evil poisoning creature!
@heathy123, you can move around, who needs an idle bar, also this isn't an Idle game, as running around actually makes you gain levels faster, also I failed at making a levelling up bar, and now I'm away on holidays and can't program, sorry about everything peoples, I'll make a new BETTER game ASAP.
Not sure if this will work but, Map 5(Easy Marathon): cost reduction on dexer,fire mage,cold mage,energy mage, basically get 2 dexers then, 2 energy mages then, 2 fire mages then, 2 cold mages. have fun with your badge.(If it works, not sure on the element of the boss...)
(First of all, let me fix something from my first tips, instead of archer and persuader1, get reduce dexer cost, reduce poison mage cost and reduce fire mage cost) Map 4: Start with 3 dexers, SAVE UP, just before the bat wave get 3 poison mages, on wave 6 save up, then get 3 fire mages before the rat wave. After that just upgrade, and place random units if you have alot of spare money =D. You should end with 25 or more lives remaining. Map 5(The Easy Marathon, which happens to be quite hard): I'll put it up in the next post.
Tips to help with medium badge for the quest. Map 1:Use 2 Dexers and 3 fire mages, upgrade your dexers first. (Now spend your point on fire mage cost lowering) Map 2(The one that has 15 waves):Use 1 Dexer and 1 fire mage on each of the entrances(Also add 2 extra fire mages, one after wave 6 and the other after wave 7, keep them fully upgraded at all times or else you'll let some through on the bat swarm[wave 8])(Spend your point on fire mage damage increase). Map 3(20 wave one, near the top of the map): Place 5 fire mages, avoid the 2 blocks on the NE side of the map(They don't cover much room). Once you get up to the last wave, spam dexers EVERYWHERE. You should get through with 29 lives left.(Re-asign your points and get archer and persuader1). (I'll continue this later).