system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel/MCU] What's it take to kill the hulk? *Possible AoU spoilers

As we saw in both Avenger's movies, the Hulk can take a friggin beating. The hulkbuster suit seemed almost even more powerful than the hulk but even then it barely was able to contain the hulk. He can clearly take advanced weapons as well as conventional gunshots no problem. In the comics what does it take to kill him? Adamantium could probably do it but is there any other ways to do it?
gpt
I think the reason the Hulkbuster was able to KO him in AoU was because Scarlet Witch's control was starting to wear off, and Hulk was realizing there wasn't anything to really keep him threatened/angry, since Banner's inside with fear of hurting innocents, which Hulk might even share.