Games like Hel Survivor
Games like Hel Survivor include Vampire Survivors, Halls of Torment, Megabonk, Death Must Die, and Skul: The Hero Slayer. We matched them by the tags players give Hel Survivor on Steam (Action Roguelike, Bullet Hell, Roguelite, Action, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Megabonk
Shared: Action Roguelike · Roguelite · Bullet Hell

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

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

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

BALL x PIT
Shared: Roguelite · Action · Bullet Hell

Hades
Shared: Action Roguelike · Roguelite · Action

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

Soulstone Survivors
Shared: Action Roguelike · Roguelite · Bullet Hell

Dungreed
Shared: Action Roguelike · Roguelite · Pixel Graphics

Brotato
Shared: Bullet Hell · Action Roguelike · Singleplayer

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Indie · Pixel Graphics

Nuclear Throne
Shared: Action Roguelike · Pixel Graphics · Bullet Hell

Rogue Legacy
Shared: Action Roguelike · Action · Indie

Dead Cells
Shared: Action Roguelike · Pixel Graphics · Roguelite

Seraph's Last Stand
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

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

Noobs Want to Live
Shared: Bullet Hell · Action Roguelike · Action

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

UnderMine
Shared: Action Roguelike · Roguelite · Pixel Graphics

Hades II
Shared: Action · Roguelite · Action Roguelike

Nova Drift
Shared: Bullet Hell · Roguelite · Action Roguelike

Star of Providence
Shared: Bullet Hell · Action Roguelike · Roguelite