How to beat first and second boss.

Im at the final boss.... I beat all the other bosses, and here is how to beat them. On butcher boss(1st) use all of ur energy for holy beam on him and right when he swings his axe, jump over him. Kill monsters for more energy and repeat all the steps again. For the second boss(necromancer) u have to attack him with the corresponding weapons(upgrade all ur weapons) when its black dont attack, when its orange use the pistol or machine gun. When its red use flamethrower, when its blue use ice. The colors go in order black, orange, red, and blue. Good luck.

Tinybaboy about Twin Blades