Basically have certain Achievements only possible in certain maps, I think this concept could fit very well into the Open World! Especially with all the unique Dungeons, One issue I could see is Removing maps… But all the ones currently in 2.0 hopefully wont be removed as they are pretty important for showing off Yeeps!
Some Ideas I have are
Win a round of Infested Invasion with Challenge mode turned on
Complete and Loot Old Mines-Frost Vault-Lava Depths-Facility X (Not all in one achievement!)
& Defeat 50 Wolves in Wolf Valley
#Map Exclusive Achievements!
gleaming marsh
elder bridge
*Wolves