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