Board Thread:General Discussion/@comment-27907368-20160412010659/@comment-26242189-20160501064319

PancryPancreas5 wrote:

-We witness Asgore die in EVERY neutral run, but we NEVER witness Sans death: we even have to witness his death before we can get True Pacifist run. Unlike Sans, who never dies, no matter what neutral run you take (even during Genocide, it is unclear if he actually died, since he walks offscreen before being able to see his fate and isn't added to your kill count) Look at the title of the thread.

It say, NO SPECULATION.

It is unknown if Sans died or not. You're LV goes up, as well as your EXP, but your kill counter does not go up.