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