I notice a lot in games when trying to punch myself off a wall that the punch will phase through to the other side of the wall. Only really happens when you press viscous's body right up against the wall - makes trying to use the punch for movement inconsistent. Video attached
More items in the shop that enhance the sliding ability would be cool. Slide duration, speed, etc. Maybe even a PHD slider type thing where you can do some AOE damage while sliding.