I bought this game back in June, but stopped playing it for a while because I got side tracked by other games. But, I started to play it again a few days ago and decided to complete it. I'll just show a few of the latest achievements that I've unlocked.
One Gun - Beat the game using only the Plasma Cutter - 40G
My first run-through was on Normal difficulty, so this wasn't as hard as it sounds. Plus, upgrading the gun helped a lot and also it's a fucking awesome gun. I just didn't want to swap for another gun, even if I able to, I was having so much fun with it. If I was running low on ammo, like I did when facing the Leviathan, I would just use my Kinesis until I found more.
Butcher - Dismember 1000 Limbs - 40G
This was one of the main reasons why I kept using the Plasma Cutter. It was so much fun just shooting off their limbs. I would usually shot one of their legs off, then one of their arms. I would also occasionally use stasis on a few if I got crowded.
Autofire - Kill 30 enemies with the Pulse Rifle - 10G
I found this gun to be quite boring to start with, properly because it didn't feel like it had any power compared with the Cutter. But that's because I haven't upgraded it as much as that gun. Once I do, it'll probably be awesome. The secondary fire looks a lot of fun.
I'm also going to use all the other remaining guns to kill 30 enemies so I can unlock those achievements. Plus, I'll start the Impossible difficulty setting soon. This game is just brilliant, definitely my favourite Horror game this generation.