heh i've managed to glow frame about 35% of the stages.. and thats like 85ish% of all the stages i've unlocked ^^ so yeah it's not TOO hard to do it. The trick is send a lot of waves, get 1 really strong gem at teh front, put a couple trenches and drop bombs endlessly Don't forget to boost your max mana to 28k-33kish
Contrls aren't so great with the delete page up and end as powerups
I'm running a laptop so i basically have one hand over another, and each powerup key is spaced 2 away from each other up and down
Awkward controls Ok game