Here is the full list of all 42 东方妖精武踏会 - there are Touhou Fairy Knockout ~ One fairy to rule them all achievements.
Open the game for the first time
Open the game 30 times
Kill all enemies in a level by dashing"
Deal attack to two or more combat units with one dash
Deal attack to three or more combat units with one dash
Revive naturally
Stay airborne for more than 5 seconds without flying
Pass any world in story mode
Finish Cirno's line with a score of B or higher
Finish Daiyousei's line with a score of B or higher
Finish Sunny's line a score of B or higher
Finish Luna's line with a score of B or higher"
Finish Star's line with a score of B or higher
Finish Lilywhite's line with a score of B or higher
Finish Lilyblack's line with a score of B or higher"
Finish Clownpiece's line with a score of B or higher
Finish Larva's line with a score of B or higher
Unlock all available playable characters
Get an S rank in story mode
Get 5 S ranks in story mode
Get 20 S ranks in story mode
Kill all enemies and complete any story line in story mode by stomping
Defeat Reimu in story mode
Defeat Marisa in story mode
Defeat Sakuya in story mode
Defeat Youmu in story mode
Defeat Reisen in story mode
Defeat Aya in story mode
Defeat Sanae in story mode
Defeat Rin in story mode
Defeat Shou in story mode
Defeat Futo in story mode
Defeat Seija in story mode
Defeat Megumu in story mode
Defeat Hecatia in story mode
Defeat Okina in story mode
Get 3 items in the same level
Collect all available foods
Collect all combat items
Keep an unused item when you clear story mode
Jump into water voluntarily
Congratulations, you have got all Steam achievements! Time to show off!