You're not lying. Looking for the hidden quests without knowing if you had already done them and just sort of blindly farming for a bit took by far the most time.
The last one I was missing in the end was the crumpled note in Caldeum Prison which has a low drop rate to boot.
I think my last one was glittering ore in Hawezar. I used a guide for easy to miss quests and I also had a good portion of them tracked through the D4planner map, but it didn't had all the quests at the start so a lot of them were added later, combined with me maybe forgetting to check some off myself, creating a bit of a convoluted mess. Still, I was able to narrow it down to some potential ones and just farmed the locations for several days, which every guide lists something else too. Absolutely painful. I knew the UI was bad but I can't believe they skipped on something as important as this.
I basically just did the dungeons whenever they had a whisper on them. A few each day whenever I had time.
But the last 15 or so I just bit the bullet and grinded them out while watching TV on the side.
As for a reward.. Just a feeling of smug superiority and very limited bragging rights.
Nope. No reward, not even an achievement. Nothing. Honestly a bit of a slap in the face. Especially since they couldn't even be arsed to add a questlog for already finished quests. Took me several days to track some of the last missing ones down. Definitely not fun, but probably a good indicator of how much of a chore the FOMO pass will be.
I'd hope there's at least an achievement. I was disappointed there wasn't one for getting max renown rewards.
I'm still nowhere close to finishing all the side quests and dungeons. Once I get to WT3/WT4, there just doesn't seem any reason to grind through all the regular dungeons.
They've packed as many unfun tasks into this game as possible to pad play time. The moment I found out that only Lilith statues and the fog of war would carry over into season 1, I decided I was done with this game. Here's hoping that Remnant 2 is good!
I think a lot of it is shared, but I don’t really play characters after a season ends so I’m only focusing on what will be carried over from season to season.