How do I beat Undyne on the Pacifist run?

[d(*-*d)]

I've gotten her to the point where she has an angry expression and won't say anything but '...', but no matter how many turns I use 'Challenge' or 'Spare' she does nothing but attack. How do I finish the fight?

[lostsomething]

Run away.

[dragoonbb]

you flee like a punk every chance you get and move forward till a point you'll know when.

[King of Evil]

When you're not green, run.

[Tarious]

keep pleading/challenger her till she gets pissed and starts replying with ",,," then flee, and kite her to the area she was guarding, you'll have to flee a few times, when you cross the bridge she'll pass out from the heat and you can use water on her from the cooler.

[Spaceballs the Profile Name]

Colors matter!

[Xarah Xylvia]

I finally got it after 16 mins lol, what you have to do is: Once Undyne is doing the triple dot and doing crazy attacks, you have to press "flee" then hold up to go to the cave. Once that happens you have to keep running and when she catches you, repeat pressing flee and keep running. Once you get to a certain part (don't wanna spoil it ;) ) you beat undyne c:

[Nyan_Pur_San]

Escape when you can and stay determined

[(Edgy) Asriel Dreemurr]

Originally posted by Quill Gill:

I finally got it after 16 mins lol, what you have to do is: Once Undyne is doing the triple dot and doing crazy attacks, you have to press "flee" then hold up to go to the cave. Once that happens you have to keep running and when she catches you, repeat pressing flee and keep running. Once you get to a certain part (don't wanna spoil it ;) ) you beat undyne c:

You must be a powerful necromancer, because you just brought this thread back from the dead...

[Igalis]

I died 3 times,almost ragequit but yeah know i know how to finish the battle :P

[holoandwolf]

lol run

[titanazor]

I'm struggling so much i know what to do but i keep failing

[Kptn Howdy]

Originally posted by DarkSlayer111:

I'm struggling so much i know what to do but i keep failing

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[Games Bond]

Wow, if your'e having trouble here you do NOT want to do a genocide route.

[John Lemon From The Beagles]

i have been trying this damn boss for hours! lets see if my 57th attempt will work

[roymaster45]

Guys, it really shouldn't be that hard.

Go to Mercy and choose to Flee whenever your heart is red. Then just run north through the cave and follow the path to Hotland.

If/when she catches up to you again, just follow the same procedure. Her attacks get faster the longer you're in battle with her, but any time you flee and she catches up, they should slow down a little.