Demon's Tier+

You fight this boss on the 11th floor. The boss is quite simple, but boring. You can attack him for a very limited time after which he will disappear to appear in another place. Repeat the process until he dies. Sometimes it will spawn small immortal enemies that will attack you with either a single explosive shot or a fan of shots. Dodge them, don't forget to use "dodge" on , they will disappear a few seconds after the boss disappears. If you stay in the center of the screen, then small enemies may not appear, and then you will be able to kill this boss without any problems at all.