Ps4 disc enemies travelling through walls

Hi the more i travel through the map to the bigger buildings hunters and dogs are travelling through walls theres no hiding lol.I lost a mission called the command bunker network but it reappeared when i got into minken by collecting the codes.
This game is awsome.The only things i would change is when your in a dog fight the enemies have a good aim and constantly shoots at you unless you run.Maybe a enemy reload period and the enemies run and jump at you alot.Can we get a slide or lay flat to the floor?many thanks