Tips for fighting the shadow: (suggested, obv, high healing, life, run & jump -double jump is kinda optional, but always welcome) stand in one of the high platforms; when the shadow charges jump at the last moment and go to the opposite platform. When it uses the flames attack, jump (you don't need to jump really high: between the first and the second one you should be fine). Wait for the boulders to hit it, collect the diamonds.
+ if it was helpful! =)
With full upgrades (minus the 2nd turret) I still can't beat the air boss... does someone have a strategy or something? (Also the laser is strange O.o Why couldn't they have made it always on? Even if it was less powerful it'd be ok!)
Wouldn't it be cool if when you kill one type of monster 666 times it transformed in a more powerful (well, armored I guess) version of it, dropping more gold and gems?
Sorry about that, our multiplayer host was under DDOS attack. Apologies for the instability!