Codename: Gordon

Codename: Gordon is a 2D side-scrolling shooter game created by a small studio around the time of Half-Life 2. As in the main series, you will take on the role of the legendary Gordon Freeman and use an arsenal of various weapons, including a crowbar and a gravity gun. In total, the game has 6 levels, where you will meet familiar characters and fight with Alliance soldiers, zombies and headcrabs. Also, as you progress, you will need to solve simple puzzles.