The game is awesome & very challenging no doubt. However, the boss at LV 184 is very hard to beat because when I used Gaea and Cadmus, the sound waves won't stop the boss's attacks and they were nearly impossible to dodge. I managed to reach LV 200, but the boss is extremely OP as if it's actually impossible to beat and to evade all of it's attacks, even if I used Titan, Hades, & Gaea with the items (like Shields, Life, Bombs, Super Mode, etc) :(