this game is so fun first thing i did was upgrade all arrows and do the spam tilll i got like 200k exp(i watch TV during this part) in an earlier lvl but a lvl like lvl 10....and for "the end" right b4 i raped the castle, i got as much mana as possible, then when the boss came i spammed all early 4 units(everything is maxed btw including castle bonuses) and a dragon and arch angel occasionally to hold him still longer while my arrows were spammed...i killed him w/out him touching my barrier