Here is the full list of all 50 Mushihimesama achievements.
Defeat Benihonogada without breaking its legs. (Normal, Novice only)
Obtain 1UP. (Normal, Novice, Arrange only)
Complete Maniac mode. (Normal, Novice only)
Go over 70,000 in fire count. (Normal, Novice only)
Go over 40,000 in fire count. (Normal, Novice only)
Complete Ultra mode! (Normal, Novice only)
Change to M-POWER (Normal, Novice only)
Select the Ultra mode. (Normal, Novice only)
Display any of the following: detailed score, lever, extra window.
Change to W-POWER (Normal, Novice only)
Start training.
Complete without using any bombs. (Normal, Novice only)
Defeat miniboss in STAGE 5. (Normal, Novice only)
Complete Arrange mode. (Arrange only)
Defeat Aki and Akka. (Arrange only)
Defeat boss in STAGE 5. (Arrange only)
Defeat boss in STAGE 4. (Arrange only)
Defeat boss in STAGE 3. (Arrange only)
Defeat boss in STAGE 2. (Arrange only)
Defeat boss in STAGE 1. (Arrange only)
Start with M-POWER (Normal, Novice, Arrange only)
Start with S-POWER (Normal, Novice, Arrange only)
Play a replay.
Complete Original mode. (Normal, Novice only)
Defeat boss in STAGE 5. (Normal, Novice only)
Defeat boss in STAGE 4. (Normal, Novice only)
Change to S-POWER (Normal, Novice only)
Defeat miniboss in STAGE 4. (Normal, Novice only)
Defeat boss in STAGE 3. (Normal, Novice only)
Get a score extend. (Normal, Novice, Arrange only)
Defeat boss in STAGE 2. (Normal, Novice only)
Break all of Benihonogada's legs. (Normal, Novice only)
Obtain bomb berry. (Normal, Novice, Arrange only)
Defeat miniboss in STAGE 2. (Normal, Novice only)
Obtain FORMATION options. (Normal, Novice, Arrange only)
Change to FORMATION. (Normal, Novice only)
Fire at Nanabusshi and obtain a lot of amber. (Normal, Novice only)
Defeat boss in STAGE 1. (Normal, Novice only)
Obtain TRACE options. (Normal, Novice, Arrange only)
Change to TRACE. (Normal, Novice only)
Play the game. (Normal, Novice, Arrange only)
Start with W-POWER (Normal, Novice, Arrange only)
Open the sound customization menu.
Defeat Aki and Akka. (Normal only)
Complete the Original mode with no continues. (Normal, Novice only)
Complete the Maniac mode with no continues. (Normal, Novice only)
Complete STAGE 3 in Ultra mode with no continues! (Normal, Novice only)
Complete Arrange mode with no continues. （Arrange only)
Go over 150,000 in fire count. (Normal, Novice only)
Went over 200,000 in fire count. (Normal, Novice only)