Board Thread:General Discussion/@comment-26347196-20160410032827/@comment-26347196-20160715152906

FabbeFredis wrote: I definately found the Grand Dunk to be harder than Undyne while doing a normal run, but on the other hand, while I was doing a no-heal genocide run, I was stuck at Undyne for quite a while, taking up at least 3 hours of my time. She was a tough nut for me to crack without healing. Sans, however, wasn't as hard. I got to his last attack on my first try but died, and he probably took me about an hour to beat.

If one were to do a no-hit run, I definately think Undyne would be far, far harder to beat than Sans.

Basicly, from my experience:

Sans = Hardest at first

Undyne = Hardest during challenges That's probably pretty true in my opinion. I personally think that if you're winning against Sans, chances that you let very few mistakes get to you (because a small one could already cost you a Legendary Hero, while 2  gaster  blasters cost you the instant noodles or the pie). So when you starts it with more challenge, you're only a few miles behind the perfection when battling against Sans already.