exp completion

I don't know about anyone else or if there's some sort of event going on, but I'm getting more exp for completing some of these quests than mentioned. I got 12k for completing act 4 scene 3 and 69k for act 4 scene 2. The amount is correct for turning in the quests, but not when you actually finish it.

21k for act 5 scene 1. The final act gave me 60k for completing it.

It might depend on the difficulty, not sure. *doing advanced*

Yes, the exp reward does depend on the difficulty. The quest reward, from what I can gather, is fixed. However, the exp given from the stage missions depends on your total level, like Shadow Mission exp.

Hardmode "Finale" is 100k experience.