Here is the full list of all 30 Let's! Revolution! achievements.
Unlock all skills and items.
Hit 6 enemies with Armageddon.
Perform Premonition for 0 Energy.
Perform a Slash for 0 Energy.
Defeat the King with the Witch.
Defeat the King with the Hunter.
Defeat the King with the Charger.
Maintain your Charge for 15 turns.
Defeat the King with the Oracle.
Escape a level with 5 or more visible enemies.
Hit 4 enemies with Roundhouse.
Defeat the King with the Shadow.
Defeat the King with the Trooper.
Defeat the King.
Defeat the King with one health remaining.
Max out your Energy.
Max out your Health.
Reach Beebom City.
Defeat a Heavy Guard.
Defeat three or more enemies in one turn.
Complete the tutorial.
Complete a run without taking any damage on Normal or harder.
Defeat the King without stepping on any enemies.
Catch the King without killing any enemies.
Defeat the King on NG+5.
Hold 100 gold.
Hit an enemy for 5 damage.
Hide 4 enemies with a Smokebomb.
Finish a run on normal or harder in under 10 minutes.
Recieve a complimentary Bubbleship Ticket from Chovy.