If ever there was a co-op twin-stick shooter that’s sure to strain friendships, it’s Helldivers. You could play alone in this Starship Troopers-inspired game, but Arrowhead Game Studios doesn’t obey traditional difficulty levels. Supposedly moderately difficult worlds are bloody tough. Bring a friend, or random player/s, into the mix, and they’ll help complete objectives. But they also might accidentally shoot you in the back. Still, your dozenth death from friendly fire isn’t enough to hold back Helldivers from being as rewarding as it is punishing.