As most hard difficulties prove a challenge for some players this might be quite a challenge for some and not so for others. Just take your time and play through the game on casual to get a feel for all the controls and how everything works. Each ghost will need to be approached with in a different method and each creature you run into will need to be tackled with caution.
These achievements do stack so if you want to do your first run through on pro and unlock most of the achievements you can.
Here are a few things to keep in mind while playiing on hard:
- Vent your pack on a regular basis
- Revive all team mates as soon as you can
- Know the area your heading into
- keep your distance, if you can
- Take your time