Certainly not bad. The objectives were clear once I bonked into the locks on the shrimp tank, and the challenges were tough but not insurmountable. My main criticism is the hitbox on the fish being MASSIVE in comparison to its sprite - in Lawnmower Lagoon, I died several times in places I thought I was in the clear. The movement was a little strange but not unusable, and it contributed to the feeling of mastering the controls.