Kumoon has 12 achievements. 9 of those are self-explanatory and will unlock as you complete all the tutorial, easy, medium and hard levels.

The other 3 are guided below. Most of these are luck-based and I have no idea if there's a "proper" way to do them.

Clear Tutorial-2 Without Firing a Shot

My original intention was to push a full 4-stack to the other side, but that's too hard. If you nudge it too slowly the entire stack just topples over.

Actually, you can jump extra high if you press both jump buttons simultaneously, so everything above is meaningless.

Clear Tutorial-3 with Maximum Possible Points

Clear the Pillars with One Shot

Credit to James Russels for the method:
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2279156609