https://rubber-ducks.itch.io/soul-o

Soul-O is a single-player puzzle platformer in which you play as two halves of the same soul that must work together to escape the dark dungeon.

The soul is cursed and both bodies are bound together and can only handle moving one body at a time.

After a set interval of time, the soul gets overloaded from one body and shot along the tether to the other half. If either body gets hit by this fatal shot, you perish.