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

Tanphrous, Godverse Wiki

Can I beat Sans Undertale and still get a refund?

Why is Sans not an actual character in Smash? - Quora

Incase it isn't obvious enough, Sans is trying to go back to the

That Which Remains V2 by YknowThatComputer on DeviantArt

Puppet Master Sans/Puppetale, Godverse Wiki

Sans Undertale Mod Minecraft - Apps on Google Play

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

I read your Undertale hot takes

Irradicable!Sans, Giroverse Wiki

Undertale Genocide run explained: How to play the game in the most