S.K.U.L.L.

S.K.U.L.L. System aka Demon Pact:

Reaching [QUASIMORPHOSIS] 1000 will alert a Boss enemy that comes after you to kill you.
Killing that "demon" will give you the possibility to loot his skull (rotating skull on the floor).
You can then sign the pact by absorbing the item even without extracting.

|- A Demon Pact can only be removed by using a specific item, it will stay on your Clone even after it died! -|

After signing the pact you can activate the (Q)-skill, doing so will increase your Quasimorphosis and activate a cooldown timer. Once the cooldown is done you can activate the (Q)-skill again.

[Self-Transform] (Q)-skills will disable your ability to open the inventory, class, health and operation windows. You can still toggle your movement modes.

Other (Q)-skills will summon demon friends to help you or activate other helpful abilities.