Games like Action Commando 2
Games like Action Commando 2 include Insect Swarm, The Ascent, RUINER, Turnip Boy Robs a Bank, and God's Trigger. We matched them by the tags players give Action Commando 2 on Steam (Hack and Slash, Shoot 'Em Up, Top-Down Shooter, Twin Stick Shooter, and PvE): closest matches first, and among equally close ones the better-known games.

Insect Swarm
Shared: Shoot 'Em Up · Top-Down Shooter · Shooter

The Ascent
Shared: Top-Down Shooter · Shooter · Cyberpunk

RUINER
Shared: Top-Down Shooter · Twin Stick Shooter · Cyberpunk

Turnip Boy Robs a Bank
Shared: Shoot 'Em Up · Top-Down Shooter · Hack and Slash

God's Trigger
Shared: Hack and Slash · Top-Down Shooter · Shoot 'Em Up

The Callisto Protocol™
Shared: Shooter · Horror · PvE

Alien Shooter 2: Reloaded
Shared: Shoot 'Em Up · PvE · Shooter

SYNTHETIK: Legion Rising
Shared: Top-Down Shooter · Twin Stick Shooter · Shooter

X Invader
Shared: Shoot 'Em Up · Twin Stick Shooter · Top-Down Shooter

Brigador: Up-Armored Edition
Shared: Twin Stick Shooter · Top-Down Shooter · Action

Shadowgrounds
Shared: Top-Down Shooter · Shooter · Twin Stick Shooter

Killing Floor 2
Shared: Hack and Slash · Shooter · Post-apocalyptic

POSTAL
Shared: Top-Down Shooter · Twin Stick Shooter · Shooter

Donuts for Deer Teeth
Shared: Hack and Slash · Top-Down Shooter · Twin Stick Shooter

Dead Estate
Shared: Twin Stick Shooter · Shoot 'Em Up · Horror

Killsquad
Shared: Hack and Slash · Top-Down Shooter · Twin Stick Shooter

HELLDIVERS™ Dive Harder Edition
Shared: Top-Down Shooter · Twin Stick Shooter · Shooter

Nex Machina
Shared: Twin Stick Shooter · Shoot 'Em Up · Action

Bot Vice
Shared: Top-Down Shooter · Shoot 'Em Up · Action-Adventure

Sektori
Shared: Shoot 'Em Up · Twin Stick Shooter · Top-Down Shooter

BlazBlue Entropy Effect
Shared: Action-Adventure · Hack and Slash · Action

KILL KNIGHT
Shared: Top-Down Shooter · Hack and Slash · Twin Stick Shooter

The Horde Wants You Dead
Shared: Shoot 'Em Up · Top-Down Shooter · PvE

SYNTHETIK 2
Shared: Top-Down Shooter · Twin Stick Shooter · Shooter