Here is the full list of all 41 PATHOS achievements.
NE NW SE SW
Clear all CALM levels.
Mr. Burdin I presume?
Handyman
Putting my thoughts in order.
Audio clue: http://www.kingoreo.com/2.mp3
We all scream
Audio clue: http://www.kingoreo.com/3.mp3
E.Z. Taylor
Gain from loss one does not measure...
The relic, cursed! The walls, shifting! Steeling my nerves, I dashed at the stones, searching for some hidden door or portal. In retort, the dungeon merely mocked me, undulating like a mirage and sliding into a new position. I was inside some infernal puzzle box. Hark! Light! Egress! I hesitated. Not without the relic in my hands. Not without some proof. And there, I spent the last of my will pushing back against the cavern's uncanny malevolence, petitioning, nay, commanding it to vomit up its prized victual. Safe in my holding bag, I made haste from that daemonic hollow.
Bq
The Incredible Journey.
Audio clue: http://www.kingoreo.com/1.mp3
Wind Water
Garbage Man
Medulla
Sacrificial Extrication
Liquid hot.....plasma.
Smells great.
Audio clue: http://www.kingoreo.com/4.mp3
BPIC
Warden's Key
One of the Four Great.
Workin Weekends
The entombed Villa of the Papyri.
Misstep and Drift.
Clear all PAINLESS levels.
Clear all FAIR levels.
Clear all TOUGH levels.
Clear all PAINFUL levels.
Clear all STRESSFUL levels.
Clear all AGONIZING levels.
Clear all TORTUOUS levels.
Clear all TRAUMATIC levels.
Clear all HARROWING levels.
Clear all TRAGIC levels.
Clear all DISTURBED levels.
Solve all BREAKTHROUGHS.
Finish the main story.
100% the game.