In Fallout Shelter, there is an achievement ("Home Sweet Home") for "Build 1 of every room type". Unfortunately, the game does not provide any more details about what is required.
What I have noticed is that any particular room type actually has 3 different names, depending on its upgrade level (e.g., a level 1 Living Quarters is a "Living Quarters", level 2 is a "Residence" and level 3 are "Barracks"). However, merging rooms (so a 1 or 2 wide vs a 3 wide) does not have this effect.
I've unlocked and built almost all the room types (except for the Nuka Cola production centre), but my percent for this achievement is only 20%.
Can anyone confirm that this achievement requires 3 of each room type to be built simultaneously, each with a different level of upgrade? Or if I only have 1 of each room type built and upgrade each to level 3, should this suffice? (since all levels 3s were level 1/2 beforehand)
EDIT: I have put together a spreadsheet to track my progress. Interestingly, according to my calculations, I should be at 35% complete - but Game Center still says 20. I don't know all of the names yet, please comment if you have any I don't!