Hi! Just so you know, I love this game and I don't want to be like really negative or anything. Anyway, I found a few bugs:

     -Sometimes in Stalk Yin Phase 2, Stalk Yin's health will get to just about zero but then he will become impossible to hit. This usually happens to me when I collide with Stalk Yin in Phase 2, and I am usually able to fix it by reloading the phase. 

     -Because of the new shortcut where you can drop down from the top level to the ground floor that was added in 1.1 I think, it is easy for the player to infinitely collect presents in Endless Mode and practically stop Yin from moving.

Thanks!