Here is the full list of all 13 Energy Shock achievements.
Use Warrior to win normal mode
Use Hunter to win normal mode
Use Ninjia to win normal mode
Try not save the world
Gain 200 armor or more in one battle
Win one game in 10 minutes
Use Wizard to win normal mode
Use Warrior to win hard mode
Use Hunter to win hard mode
Use Ninjia to win hard mode
Use Wizard to win hard mode
Beat the game with full HP
Beat the game with 1 HP