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