Army of Ruin
55 Achievements
35-40h
PS5
Jellyfish Ashes
Forest III - Complete the Stage with Meteorite Blast
46.9%
How to unlock the Jellyfish Ashes achievement in Army of Ruin - Definitive Guide
You'll first need to unlock Meteorite Blast by beating Graveyard II (Meteorite Blast (10G)), but then it's just a matter of beating this stage with it. I find Meteorite Blast to be a pretty solid weapon, and especially good for crowd control with its knockback, so it should be a good asset for finishing this stage.