Games like Rustil: Eternal Labyrinth Castle
Games like Rustil: Eternal Labyrinth Castle include Hades II, ICEY, Hades, NieR:Automata™, and RWBY: Grimm Eclipse. We matched them by the tags players give Rustil: Eternal Labyrinth Castle on Steam (Action, Action Roguelike, Hack and Slash, Female Protagonist, and Creature Collector): closest matches first, and among equally close ones the better-known games.

Hades II
Shared: Action · Hack and Slash · Action Roguelike

ICEY
Shared: Action · Female Protagonist · Hack and Slash

Hades
Shared: Action Roguelike · Hack and Slash · Action

NieR:Automata™
Shared: Hack and Slash · Action · Female Protagonist

RWBY: Grimm Eclipse
Shared: Hack and Slash · Spectacle fighter · Female Protagonist

Bayonetta
Shared: Action · Hack and Slash · Female Protagonist

Touhou Dystopian
Shared: Action Roguelike · Action · Female Protagonist

Shape of Dreams
Shared: Action Roguelike · Hack and Slash · Action

Megabonk
Shared: Action Roguelike · Action · Loot

Nunholy
Shared: Action Roguelike · Female Protagonist · Hack and Slash

METAL GEAR RISING: REVENGEANCE
Shared: Action · Hack and Slash · Spectacle fighter

Homura Hime
Shared: Female Protagonist · Hack and Slash · Spectacle fighter

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Indie

Stellar Blade™
Shared: Action · Female Protagonist · Hack and Slash

Granblue Fantasy: Relink
Shared: Hack and Slash · Action · Anime

Bright Memory: Infinite
Shared: Action · Female Protagonist · Hack and Slash

Last Epoch
Shared: Hack and Slash · Loot · Action

Wolcen: Lords of Mayhem
Shared: Hack and Slash · Action · Loot

Rabbit and Steel
Shared: Action Roguelike · Cute · Action

Bright Memory
Shared: Female Protagonist · Hack and Slash · Action

Devil May Cry 5
Shared: Action · Hack and Slash · Spectacle fighter

Tales of Berseria™
Shared: Action · Female Protagonist · Anime

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · Hack and Slash

Hyperdimension Neptunia U: Action Unleashed
Shared: Action · Hack and Slash · Female Protagonist