Here is the full list of all 52 Bloons Monkey City achievements.
Capture 500 pieces of land of any kind
Win 20 Contested Territories
Reach 10000 City Honor
Build up a bank balance of $200,000 City Cash
Get 10 treasure chests on a single map
Crank up to 5,000 total power for your city
Pop 1,000,000 Ceramic Bloons
Pop 100,000,000 bloons of any type
Destroy 10,000 ZOMGs
Have built simultaneously at least 1 of every Base, Upgrade, Special, MvM, and Resource building available
Reach 7500 City Honor
Pop 1,000,000 Camouflage Bloons
Win 10 Contested Territories
Enable all bloon types for Monkey v Monkey, including all MOAB classes
Reach 5500 City Honor
Capture 250 pieces of land of any kind
Destroy 10,000 BFBs
Reach 4500 City Honor
Successfully defend against 100 Monkey v Monkey attacks
Reach 3600 City Honor
Destroy 10,000 MOABs
Reach 2800 City Honor
Win 5 Contested Territories
Pillage $500,000 from other players
Have 100 monkeys ready for duty in the My Monkeys panel
Reach 2100 City Honor
Reach 1500 City Honor
Revenge 25 Monkey v Monkey attacks
Reach 1000 City Honor
Participate in 10 Contested Territories
Reach 600 City Honor
Destroy 1,000 MOABs
Successfully defend against 10 Monkey v Monkey attacks in a row
Reach 300 City Honor
Win 10 Monkey v Monkey attacks in a row
Successfully defend against 3 Monkey v Monkey attacks in a row
Reach 100 City Honor
Pillage $10,000 from other players
Reach 50 City Honor
Build up a bank balance of $10,000 City Cash
Supply your city with a total of 1,000 power
Win 1 Contested Territory
Capture 10 pieces of land of any kind
Revenge 500 Monkey v Monkey attacks
Successfully defend against 2,500 Monkey v Monkey attacks
Capture 2000 pieces of land of any kind
Capture 100 river or lake squares
Capture 100 mountain or volcano squares
Capture one of each: Wattle Trees, Tranquil Glade, Glacier, Shipwreck, Sticky Sap Plant, Phase Crystal, Temple Ruins, and MOAB Graveyard
Destroy 10,000 DDTs
Pop 1,000,000 Lead Bloons