Nope, I didn't pay for it. Rank 26 so far. Lol. Wait until ultimate upgrade hehe... Anyways, I found this glitch. I placed a wall of spikes at the end of the expert map (non purchase ones) then I sent a BFB. Amazingly the BFB DID not reach the spikes and the spikes were dissapearing. o.0
I just got to rank 20. Ha, lightsaber thrower. Pretty sweet upgrade, if only it attacks faster. The plane isn't that good, the pineapples keep missing x.x The mage is pretty useful just because of his whirlwind. Fireball is OK, but his normal attack just sucks...