Can I beat Sans Undertale and still get a refund?

Is it possible to buy Undertale, play through the entire game and beat the hardest bosses, and still be able to refund the game on Steam?~~~Music - Undertale

Epic Undertale Canvas Art: Undertale's Anime Aesthetic: Stunning Canva

A message from Sans : r/Undertale

Don't even try to disagree : r/Undertale

Puppet Master Sans/Puppetale, Godverse Wiki

UNDERTALE: Second chances in morality, by Matt Leslie

I beat Undertale Genocide without getting hit

I cannot beat sans and it's starting to make me upset enough to

Undertale, but it's Hide & Seek

Sans - Undertale Metal Print for Sale by RaggdyMan

Can I beat Sans Undertale and still get a refund?

Sans undertale (normal ver.) - Undertale - Pin

If you do a genocide run, beat Sans and then reset your game and

Can I beat Sans Undertale and still get a refund?

AFTER BEING DEFEATED SANS RETURNS!!

I red that someone have beaten Undertale on a smart fridge