Because I messed up the logistics in the main army's penultimate turn (I made them do unnecessary and not very important maneuvers that could have been avoided), I didn't have enough movement points in the last turn to destroy the Hydras and get the bonus for the quest, which was worth 50,000! And they would have given about 33,000 for the Hydras as well. It was a real letdown. I didn't have time to replay the last two turns. As a result, I only managed to score 585,962 experience points (level 30).