Games like Last Wave
Games like Last Wave include Black Myth: Wukong, Hades, Hero Siege, Hades II, and Last Epoch. We matched them by the tags players give Last Wave on Steam (RPG, Action Roguelike, Survival, Action, and Hack and Slash): closest matches first, and among equally close ones the better-known games.

Black Myth: Wukong
Shared: RPG · Action · Action RPG

Hades
Shared: Action Roguelike · Hack and Slash · Action

Hero Siege
Shared: Action Roguelike · RPG · Action RPG

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

Last Epoch
Shared: RPG · Action RPG · Hack and Slash

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

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

Tales of ARISE
Shared: RPG · Action RPG · JRPG

DRAGON BALL Z: KAKAROT
Shared: RPG · Action · Anime

DragonSword : Awakening
Shared: RPG · Action · Action RPG

NieR:Automata™
Shared: RPG · Hack and Slash · Action

Titan Quest II
Shared: RPG · Action RPG · Hack and Slash

The First Berserker: Khazan
Shared: Hack and Slash · RPG · Action RPG

Soulstone Survivors
Shared: Action Roguelike · RPG · Action RPG

Tales of Berseria™
Shared: RPG · Action · JRPG

Path of Exile 2
Shared: RPG · Hack and Slash · Action RPG

Heroes of Hammerwatch II
Shared: RPG · Action Roguelike · Action

FINAL FANTASY VII REMAKE INTERGRADE
Shared: RPG · Action RPG · JRPG

SCARLET NEXUS
Shared: RPG · Action · Action RPG

Persona® 5 Strikers
Shared: Hack and Slash · RPG · JRPG

Torchlight II
Shared: RPG · Hack and Slash · Action RPG

FINAL FANTASY XV WINDOWS EDITION
Shared: RPG · JRPG · Action

Death Must Die
Shared: Action Roguelike · RPG · Hack and Slash

Halls of Torment
Shared: Action Roguelike · RPG · Action