Madness Regent

Madness Regent is a shooting game with platforming elements that lets you play as a cool dude as he guns down everything in his way. Survive through a gauntlet of enemies to activate the final boss so you can beat the stuffing out of him.
Developer
Krinkels developed Madness Regent.
Platform
Web browserControls

Left and right arrow keys = move left and right
Up arrow key = aim gun upward
S = jump (can be double-tapped for a double jump)
A = shoot