Games like Hostile Dreams 2
Games like Hostile Dreams 2 include Jump King, A Difficult Game About Climbing, Celeste, Pogostuck: Rage With Your Friends, and Getting Over It with Bennett Foddy. We matched them by the tags players give Hostile Dreams 2 on Steam (Adventure, Psychological Horror, Precision Platformer, Difficult, and Surreal): closest matches first, and among equally close ones the better-known games.

Jump King
Shared: Psychological Horror · Precision Platformer · Difficult

A Difficult Game About Climbing
Shared: Psychological Horror · Adventure · Difficult

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

Pogostuck: Rage With Your Friends
Shared: Psychological Horror · Precision Platformer · Difficult

Getting Over It with Bennett Foddy
Shared: Psychological Horror · Difficult · Platformer

Geometry Dash
Shared: Difficult · Precision Platformer · Psychological Horror

LIMBO
Shared: Adventure · Platformer · Surreal

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

Little Nightmares II
Shared: Adventure · Psychological Horror · Horror

Knock-knock
Shared: Adventure · Difficult · 2D Platformer

SANABI
Shared: Adventure · 2D Platformer · Difficult

Little Nightmares
Shared: Adventure · Psychological Horror · Horror

I wanna be the Creator
Shared: Adventure · Difficult · Precision Platformer

Hollow Knight
Shared: Difficult · Platformer · Adventure

DARQ: Complete Edition
Shared: Adventure · Psychological Horror · Horror

Outlast
Shared: Psychological Horror · Adventure · Horror

The End Is Nigh
Shared: Precision Platformer · Adventure · Difficult

Peaks of Yore
Shared: Psychological Horror · Adventure · Difficult

Darkwood
Shared: Adventure · Psychological Horror · Horror

Blasphemous 2
Shared: Difficult · Adventure · 2D Platformer

Endacopia
Shared: Adventure · Psychological Horror · Surreal

Rain World
Shared: Difficult · Adventure · Platformer

Fran Bow
Shared: Psychological Horror · Adventure · Horror

Layers of Fear (2016)
Shared: Psychological Horror · Adventure · Horror