The broom closet ending
The best ending ever in videogame history, and probably the best ending in general. As featured in The Stanley Parable and The Stanley Parable: Ultra Deluxe Edition, obtained by doing the hardest thing: stepping into the broom closet.
"OH, DID U GET THE BROOM CLOSET ENDING? THEB ROOM CLOSET ENDING WAS MY FAVRITE!1 XD" -Everyone who was lucky enough to experience the broom closet ending