2 days late, ha!
Finished and platinumed Dredge. Turns out when you complete the game, it just takes you back to the last save point, so after figuring out who to speak to to get the good ending, the rest was easy (although one trophy involved a bit of trial and error, which is frustrating when the ability has a cooldown period).
If you take it at face value, which is skill-based minigames with a Lovecraftian horror element and story tacked on, you'd probably feel a bit shortchanged. Meanwhile, I'm debating downloading the Pale Reach DLC next time payday rolls around. I wonder if anyone's done a speedrun? For context, I platinumed on day 202ish.