The action Fut 15 Coins in BlackSite's single-player game is very straightforward. You'll control a squad, but your control only uses one button. If you hit the squad button, you can order your team to move to specific positions. You can focus fire on enemies by hitting the button while pointing at an enemy. You can also use it to order squadmates to utilize mounted gun positions, but you'll mainly use it to get your squadmates to open doors. Apparently Pierce is too good to open doors by himself. The squad mechanic feels slapdash and rarely necessary during the course of combat. Focusing fire on enemies doesn't work as well as pulling the trigger yourself; thus, it just seems faster and easier to do most of the shooting yourself. There are a couple of extended vehicle sequences where you'll drive a Humvee from one location to another while one of your squadmates lays down fire from a mounted gun to take out several giant worms that keep sprouting out of the ground. The vehicles handle just fine.
You'll get your hands on a few prototype weapons, such as a scattergun that fires rounds that can bounce off walls or a beam cannon that delivers large bolts of energy. But most of the time, you'll be using a standard-issue assault rifle. The aiming assists that make your reticle stick to enemies a bit make that make your reticle stick to enemies a bit, making firing on target a little too easy, even if you don't hold the weapons up and properly aim. Most of the enemies you face are humanoids, though you'll also face off against a handful of more creative creatures, such as the fire brute, which is a huge four-legged boss creature with a bright, glowing weak spot on its back that you have to take down with homing antitank weaponry. The game could have used more enemy diversity.