Here is the full list of all 15 Boiling Bolt achievements.
Watch the credit menu for the first time
Buy one stuff in shop
Level 1 complete
Level 2 complete
Level 3 complete
Level 4 complete
Oh my God! You killed Enkidd
You did it! You beat every level
First S rank
One step to be the very best
10 challenges complete
All challenge clear
To several is better
Really?? Are you ready now?
Good job you are Loyd now