Talk:Sen's Fortress/@comment-10291972-20150225223718/@comment-16047389-20150225230651

Likely because he'd have to reset to heal in the case that you slightly damage him, then run off or die. Most enemies in the game have a spawn trigger based on where the player is. That's why you can look down from certain locations in Lordran and see the actual zones below you with all the messages showing up, but no mobs.

It's interesting that they linked the Giant's trigger to a pathway and not just the required sections of Sen's Fortress itself.