Here is the full list of all 40 Shing! achievements.
Finish the story
Beat the final boss
Complete Level 7
Beat the 6th boss
Complete the 6th lore room
Complete Level 6
Master Level 6
Beat the 5th boss
Complete Level 5
Have 4 powerups on a single character
Complete the 5th lore room
Beat the 4th boss
Complete Level 4
Complete the 4th lore room
Beat the 3rd boss
Complete Level 3
Complete the 3rd lore room
Beat the 2nd boss
Complete Level 2
Complete the 2nd lore room
Beat the 1st boss
Complete the 1st lore room
Complete Level 1
Master Level 1
Complete the 1st challenge room
Complete the tutorial
Complete the 2nd challenge room
Complete the 3rd challenge room
Complete the 4th challenge room
Complete the 5th challenge room
Complete the 6th challenge room
Master Level 2
Master Level 3
Master Level 4
Master Level 5
Master Level 7
Achieve a 200 hit combo
Finish the story (Alternative Ending)
Find a hidden encounter
Prepare a homemade chicken soup