it imposible to get 100% because i cant unlock the pistol silencer or use it after the 4 chapter. the ai still likes to do stupid stuff especialy during lab rat when they are supposed to repel from the roof threw the skylights, they always throw grenaids but miss the hole in the skylight and it drops at there feet and they blow up the funny thing is they do it one after another. or they will run in circles or just stand still. then there is somthing up with the amount of weapon attachments the game thinks there is because nomatter what it states that i only have 10/13 witch also keeps me from 100%. and beating the game on super the achivement wont unlock some people say it does but it didnt for me. plus there are a bunch of random small things that need polish. i know alot of people wont the multiplayer fixed but there are alot of people that play singleplayer only