Rework Vilenta boss pls

This boss is weak and annoying af (did I say boring and time consuming). I hate this boss so much I don't wanna go for a passive point. And even enough to go to this forum

How to fix:
1. Easy way - Just reduce amount of time boss is invulnerable, faster air attacks.
2. Harder one - Make it so every second you need to stay in position that is not attacked (eg chess board changing from white to black square)

These changes will make the boss more entertaining, I'm ok with waiting while fighting e.g. Kitava is a perfect boss, not boring even on a faze change. But VIlenta is just mobile game level boss, maybe even lower. I have to wait almost 15 second doing nothing.

PLS IT'S WOULD BE SUCH A QOL. Idk why this boss is still in the game