pro tip (enabled thanks to selling towers/barricades):
Place barricades (and towers) around the flags (just take a huge zone), leave 1 small area open, and from the moment hands and fingers are nearly there, sell barricade on other side, and fill that small open area as quickly as possible (means the monsters gotta go back to another opening)
easy way to level up: start a level, then just abandon it after you pressed: sent next wave (gives a bit xp)
do this a lot, and you will get lots of xp
easy way to get fire guardian lower at health (noxious bomb, then play dolorous balad, to inflict damage, while he sleeps. he doesn't wake up for a few turns if you don't attack, and in the meantime you can cast nullfire and Mshield and shield etc.)
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