LEGO Batman 3: Beyond Gotham
70 Achievements
1,300
35.5-46h
Doughnut Discoverer
Found and destroyed a hidden doughnut on a hub planet
20
9.1%
How to unlock the Doughnut Discoverer achievement in LEGO Batman 3: Beyond Gotham - Definitive Guide
There is also one on Zamaron on top a mountain/hill close to where Loontern gives you his third quest.
On Ysmault there is a fire you need to put out to obtain Heatwave's character stud. On the side of that building is a large crack that can be broken open. Inside is another doughnut.
There is a hidden doughnut on each of the HUB Lantern Planets. As the planets are a giant circle with no set paths it is hard to give a description so refer to the video below. There is a good chance that you will come across one just by collecting the collectibles on a planet, I came across 3. The hidden doughnut on Zamaron, pink planet, is on top of a rock formation. The hidden doughnut on Odym is located inside one of the huts, destroy the door and then grab it. The hidden doughnut is actually a character with arms and legs and looks almost like an owl from far away.
There are seven Lantern worlds in all (though one of them doesn't count for this achievement). You only need to smash one doughnut to win the achievement. The hub worlds and doughnut locations are as follows (tucked inside spoiler sections in case you want to challenge yourself with them):
Zamaron (violet/love):
It looks pink to me...
Odym (blue/hope):
Nok (indigo/compassion):
Ysmault (red/rage):
Okaara (orange/greed):
Qward (yellow/fear):
Oa (green/will):
There is also a doughnut hidden inside the Shooting Range 1 VR mission, but this is not on a Lantern hub world and, as such, it also does not count.
And yes, I found all of them on my own, without looking them up in a guide—I challenged myself to do so!
Disclosure: This is a copy of my solution for the same achievement in the Xbox 360 version of this game. The unlock requirements and doughnut locations are identical (verified before posting).
There are hidden doughnuts scattered on each one of the HUB Lantern Planets. They are pretty hard to spot and can be tricky to find since the planet is a circle with no paths. If you are collecting collectibles on the planets you'll most likely find a doughnut. Zamaron (Pink Planet) has a doughnut that's pretty easy to find if you follow the video. It's on top a mountain/hill close to where Green Loontern gives you his third quest.
The doughnuts that you are looking for have arms and legs on them. Just smash one and the achievement will unlock.
Video by LukaLaurent: