Here are some late game builds for Army of Ruin. All of them rely on having all Upgrades leveled up to either maximum, or to level 10, except for the "Extra Life" upgrade. The Extra Life upgrade isn't totally necessary, and can be upgraded as available.
Except for the Shrine 3 challenge build, each build was used to complete the ∞ stages.
See https://bsky.app/profile/james.sumners.info/post/3loqfj7xasc22 for a demonstration on Shrine ∞, Ruin 1.
Midas
This build was used to complete all ∞ stages for Graveyard, Forest, and Forge.
- Weapons: Demon Wings, Ethereal Razor, Lightning Storm, Spectral Needle
- Trinkets: Coin Purse, Emerald Ring, Enchanted Harp, Leather Bracer, Shackles, Voodoo Doll
Mork (fire rate focused)
This build can easily hit 294% fire rate. The Harp can be substituted for the Cap if more pickup range is desired. But Shield and Sword should be leveled up to max as soon as possible.
- Weapons: Lightning Storm, Miracle Staff, Royal Starfish, Spectral Needle
- Trinkets: Forbidden Shield, Forbidden Sword, Leather Bracer, Sacred Effigy, Scout’s Cap, Shackles
Mork (28min, Shrine 3, Ruin 5)
Difficult build. Requires lucky rolls to get going, but it is doable (I popped the achievement with it on Ruin 5).
- Weapons: Burning Trail, Crippling Spikes, Dire Fang, Vampire Gauntlets
- Trinkets: Enchanted Harp, Forbidden Shield, Leather Bracer, Panacea, Parchment of the Scholar, Shackles