Finally got around to finishing this game after a recent patch fixed the achievements on GOG.
The ending is pretty solid, the fights in the final area aren’t especially annoying or numerous, and there are a ton of ending slides… perhaps too many in fact. Nothing much else to say about it really as if you’ve gotten that far into the game you’ll already be quite familiar with its mix of combat and minor exploration elements. There are no last minute surprises or shake-ups.
I will however mention that my earlier issues with the Pyromancer Tactician build promptly vanished once I picked up Molten Ray. It really seems like an ability you should prioritize grabbing the moment it becomes available, as it just deletes both single targets and entire rows of enemies.
Future plans include chipping away at a Grim Darkness run I started some time ago, as a Dogmatic Noble Officer planning to go the Overseer Servo-Skull route and which is currently close to the end of the first chapter. If I ever finish that it will be on to a Heretic Melee Pyromancer to wrap things up, probably some time after the next set of DLC drop.