A minor but important update just released, v2.8.2 includes a couple of fixes for Plasma Beam piercing damage calculation, along with the addition of Coyote Time (also known as Ledge Tolerance).

With Coyote Time now added to the game, it will make precision platforming more reliable as the game won't seem like it's eating inputs when you jump off the very edge of a ledge.

Known Issues in Demo 2 (v2.8.2 and prior): Playing above 120FPS can make the player stick in specific parts of the map.