Here is the full list of all 15 Bamboo EP achievements.
10 Kills in Bamboo Heart
Defeat the hidden demon boss
Become the green faced moon
Become the red faced moon
No Johns
5 Kills in Bamboo Heart
20 Kills in Bamboo Heart
30 Kills in Bamboo Heart
50 Kills in Bamboo Heart
100 Kills in Bamboo Heart
Defeat your sifu
Catch a ball
Lmao
Cheap shot
It's easier without obstacles