Ratchet & Clank 2016 - Et tu, Copernicus? Trophy Guide (Qwark's Lounge Location)

After completing the story or killing the endboss, head back to the middle of the Deplanetizer map. There are a few locked doors around here. Transform into Qwark using the Hologuise gadget and stand still in front of the doors for a few seconds. Then you will hear Qwark say something and the trophy unlocks.