Board Thread:General Discussion/@comment-26347196-20160410032827/@comment-4560646-20160526154732

Aicilespear wrote: That's basically what has been written in the original post =)) Oops. I didn't notice; I skipped straight to the poll.

Either way, for those who are having difficulty with the dunker, this guide ought to help you: http://jadenvanadium.tumblr.com/post/133013557947/undertale-sans-fight-guide