In this game, your magic points (Essence) are your lifeline. Unlike other RPGs where you can just spam attacks, you need to conserve Essence for healing and crowd control.
However, Stray Incubus is notorious for its branching paths and hidden mechanics. One wrong choice in dialogue or a poorly managed skill tree can lock you out of the best endings or leave you underpowered for the late-game bosses. stray incubus walkthrough