What Lies in the Multiverse

• Chapter: 5
• Requirement: jump into the river
• Story-related? No; if missed on your first playthrough, you can use chapter select

The whole level has a river running at the botton of the screen. You simply need to jump into the water at any point during the level.

The very first opportunity of doing this is in the beginning of the chapter. After taking control of the Kid, go to the left. On the edge, jump into the water. Achievement should unlock right after the kid is taken away by the current.