1) They can be found at:
D:\SteamLibrary\steamapps\common\WRATH\kp1\data\profiles

2) Download my files (different profile for different achievements):
https://drive.google.com/file/d/1Wk2ZwvSnyyxqLy1isSeM_HHjnzZmp8-7/view?usp=sharing

3) Turn off Steam sync!

4) In the game, choose profile Lord for secrets and collectibles, or blahblahblah for Outlander difficulty. Each time load up Soul Tether.

This is what you can get:
The Scribe
Collect all the Notes in WRATH


Treasure Hoarder
Open all the coffers in WRATH


The Gamut
Find all secrets in WRATH


Outlander
Beat WRATH on Outlander difficulty


I. Collectibles.
You should spawn before the portal leading to the last level. It's completely untouched. Jump in and activate the power up Mark of Revelation. Now you can see the yellow and green marks.


Pick them up!


The keys to the coffers are in upper sections. Two in plain sight, third in a tiny corner.


Kill the boss and gather the last items in peace. Orrr... collect them during the fight!




II. Outlander.
This time the game was saved after the boss. Just jump into the portal.