Alien Shooter 2: Reloaded

As you upgrade you’ll face tougher monsters, your backpedalling crowd control getting steadily more bloody as foes arrive thicker and faster, and you unlock more of the game’s vast arsenal of weapons and armour. You’ll need to grind its paltry selection of side missions to keep up with the rigours of story mode, but it’s a rewarding progression even if the action soon starts to feel repetitive.