Full list of all 122 Cities: Skylines achievements worth 2,710 gamerscore. It takes around 150-200 hours to unlock all of the achievements in the base game.
The base game contains 36 achievements worth 1,000 Gamerscore, and there are 18 DLC packs containing 86 achievements worth 1,710 Gamerscore.
Create your very first city
Have a look at all the different info-view panels
Use the district tool to draw 3 districts
Apply a policy to a district you created
Unlock all city services
Unlock Monuments
Build the Medical Center Monument
Build the Hadron Collider Monument
Build the Space Elevator Monument
Build the Eden Project Monument
Build the Fusion Power Plant Monument
Unlock every single building in the game
Have a population of 100,000 in your city
Have more than 10 districts with unique policies
Have 20 transport lines
Have 50 transport lines
Have a Citizen educated to level 3 from 0
Have 15% happiness
Earn 15,000 per week
Open on a police building 100 times in a row
Have more than 95% city happiness for 5 years
Have the city survive a crime rate of over 40% for 2 years
Have 5 Fire Stations
Have 5 Police Headquarters
Fill five landfill sites
No water or ground pollution in a city of over 10,000 residents
Have over 70% of citizens highly educated in a city of over 10,000 people
Have an area the size of nine map tiles
Keep the crime rate under 10% for 4 years straight
Have the industry tax rate over 5% higher than either residential tax rate for one year
Have both residential tax rates over 5% higher than industry for one year
Experience 1001 nights in the game
Have 1000 squares of leisure specialized commercial zone
Have 1000 squares of beach specialized commercial zone
Have 15 Prisons in the city
Purchase a new map tile for the first time
Have a Sauna in the city
Experience snowfall
Have one tram line active
Have 10 tram lines active
Boost 100km of streets with Road maintenance service
Have snowplows collect 2,000,000 units of snow
Change Chirper look
Experience Rain
Experience fog
Change Chirper to a winter look
Experience a Thunderstorm
Experience a tornado
Experience a forest fire
Experience a sinkhole
Experience a meteor strike
Experience a tsunami
Experience an earthquake
Have ten disasters hit the same city
Experience a special disaster
Win 5 scenarios
Lose 5 scenarios
Have 3 blimp lines.
Have 10 blimp lines.
Transport 5,000 passengers with cable cars.
Transport 20,000 passengers with Cable Cars.
Have 3 ferry lines.
Have 15 ferry lines.
Have 3 monorail lines.
Have 10 monorail lines.
Have a Ferry, Bus Exchange Stop, MetroMonorailTrain Hub, Monorail-Bus Hub and Multiplatform Station
Win all three Mass Transit scenarios.
Name a road.
Name a road "Steve"
Name 100 roads.
Check the route of a citizen.
Have all residential zone in your city be specialized Self-Sufficient Housing.
Have all commercial zone in your city be specialized Organic and Local Produce.
Have all office zone in your city be specialized IT-Cluster.
Build one of each eco-friendly schools: Community School, Institute of Creative Arts and Modern Tech
Produce all electricity without using raw materials.
Have no polluting industry in your city, only Office Zone and specialized zones.
Have a maximum level park made with Park Tool
Have 10 parks made with Park Tool
Have a park with all zoo buildings built in it
Have 5 pedestrian Walking Tour lines
Have a Park Maintenance Service and a Zoo, Nature Reserve and Amusement Park in your city.
Have a park with all Amusement Park buildings built in it
Have a park with all Nature Reserve buildings built in it
Have 15 Sightseeing Bus lines
Level up an Industry Area up to Level 5
Build all Unique Factories
Build five Offshore Oil Drilling Platforms
Deliver 1 000 000 units of Mail
Build 10 Warehouse buildings
Build 10 Industry Areas
Build one of each road Toll Booth buildings
Create 100 academic works.
Have one campus reach "Prestigious" in reputation.
Have one campus area with more than 5000 students and all upkeep costs covered by tuition fees.
Have 15 000 students studying on campuses at the same time.
Build all Campus Area types with all of their respective campus buildings and faculties.
Build 10 Dormitories on campuses.
Build all five varsity sports arenas on one campus in one city.
Farm 5 000 000 units of fish and sea plants.
Have 60 tourists visit the Aviation Club during one week.
Build Metro-Intercity Bus, Bus-Intercity Bus, Train-Metro, Metropolitan Airport, and Bus-Metro Hubs
Treat 20 000 000 m3 of waste water using the Inland Water Treatment Plants.
Transport 35 000 citizens in trolleybuses.
Transport 15 000 citizens in passenger helicopters.
Catch 10 000 000 units of fish.
Have an airport area reach level 3.
Have 10 000 total passengers travel through an airport area.
Build an airport area with a terminal, a runway and an aircraft stand.
Build an airport area with an area of 25 000 cells.
Set the airline ticket price slider to the maximum price.
Build 10 ice cream stand plazas in one pedestrian area.
Have 5 garbage service points reach their capacity limit.
Have one pedestrian area focused on residential, one in commercial, and one in workplace zones.
Earn $5,000,000 through investments.
Put all of your money into $1,000,000 of investments, then don't sell any for one month.
Have a bank building get flooded.
Transport $2,000,000 using cash transport vans in one week.
Take a loan in order to make an investment.
Have a total of 500 weekly guests stay at hotels.
Organize three hotel events.
Have the maximum possible number of guests stay at any 5-star hotel.