Games like Lethal Justice
Games like Lethal Justice include Vampire Survivors, Megabonk, Death Must Die, Halls of Torment, and BALL x PIT. We matched them by the tags players give Lethal Justice on Steam (Action Roguelike, Bullet Hell, Bullet Heaven, Action, and Roguelite): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Death Must Die
Shared: Action Roguelike · Bullet Hell · Roguelite

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelite

BALL x PIT
Shared: Action · Bullet Hell · Roguelite

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Rogue: Genesia
Shared: Bullet Hell · Action Roguelike · Bullet Heaven

Brotato
Shared: Bullet Hell · Action Roguelike · Bullet Heaven

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Nova Drift
Shared: Bullet Hell · Action Roguelike · Roguelite

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Roguelite

The Spell Brigade
Shared: Bullet Heaven · Bullet Hell · Action Roguelike

Yet Another Zombie Survivors
Shared: Action Roguelike · Bullet Heaven · Roguelite

Time Wasters
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Astro Prospector
Shared: Action Roguelike · Bullet Hell · Roguelite

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Action

Hades
Shared: Action Roguelike · Roguelite · Action

Cursorblade
Shared: Action Roguelike · Bullet Hell · Bullet Heaven

Karate Survivor
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Roguelite

Sodaman
Shared: Action Roguelike · Bullet Heaven · Bullet Hell