[Explorer's Pack - Where on Steam (map & music)]

They're in the games main installation folder. So in my case C:\Program Files (x86)\Steam\steamapps\common\Pillars of Eternity II. In subfolders there.

[anyone else get the war hammer resounding call?]

I'd assume its talking about breakable barrels, vases etc. in the environment.

[[Level Scaling] [Difficulty] [POTD]Compilation Thread]

I had the same thing happen, critical path only upscaling  enabled but no difficulty ratings so I was sometimes running into stuff way too high level for me.  Not sure if this is what fixed it for me but they're showing now.

 

I went into the difficulty options unchecked the show difficulty rating option saved and exited the options. Then I went in turned it back  on. They still didn't show up. However the next time I booted the game and started playing I noticed immediately that those skull indicators were there.