I would say the game died with the Vordakai. From that moment the game suffers from a huge drop in quality. The game would have been better if they had cut out the rest of the content at this point and moved to the end.
It had some good parts - I liked a few of the late-game non-mandatory locations, such as the First World mini-bosses and the tomb that you unlock by defeating them all, although the obnoxious puzzle that you had to run to two separate areas to solve, wasting tons of time if you didn't have a portal network in your towns, is awful. The Spawn of Rovagug was a cool boss fight too, although it was DLC content (to be fair, a lot of the final, more or less fixed version of the game wasn't there at first). But Pitax, the HatEoT and its preambule, and the epilogue were just an extra 15-20 hours of mostly monotonous dungeon cleanup with repeating fights. Plus, the game had the gall to hide the Best Ending (tm) behind you having to max out the curse research, wasting time on kingdom projects that take ages and don't do anything, and when Pitax and beyond hit you basically can't do anything except solve crises or lose the game.
To be fair, I couldn't really give a crap about Nyrissa neither in character nor myself. She doesn't really gives you any justification to, and the whole "I am evil because I was cursed to be evil" thing doesn't really help her case much. Why the writers assumed that your character would be infatuated with her is beyond me.
Using the toolbox and enabling the option of setting all edicts to 1 day will significantly improve the game.
