Beautiful graphics! The music compliments the atmosphere and gameplay. I enjoyed the experience. I did read the tutorial before playing yet I still didn't figure the wall sliding until much later. I was glad to clear the first round, but I got stuck trying to jump onto the higher ground in the second level. I know there is wall jumping, is that used for this part? Perhaps you could include a little bit more instructions on the wall sliding/wall jumping at the beginning so that it's more obvious for players like me who don't grasp it the first time. Overall, the game is smooth and looks very polished. Good job!