Full list of all 71 Mars Horizon achievements.
The base game contains 65 achievements, and there are 2 DLC packs containing 6 achievements.
Win the Race to Mars on hard difficulty or above
Complete a mission task with 30 or more Thrust
Complete a mission task with 50 or more Comms
Succeed a launch using an N1 booster
Complete the Crewed Moon Landing mission before July, 1969
Complete a mission with a Payload that has 50% or lower Payload Reliability
Successfully launch a vehicle in Terrible conditions
Launch a human into Earth orbit before April, 1961
Place an Artificial Satellite in orbit before October, 1957
Complete a flyby of Pluto
Complete every Milestone mission in a single game
Send an astronaut on a mission one month before their retirement
Remove every obstruction from your base
Complete the Grand Tour
Land humans on Mars
Complete all 4 Mars Preparation missions
Win the Race to Mars
Land an Exploratory Rover on Mars
Complete every Research in every Research Tree in a single game
Complete every Research in the Buildings Tree
Hire a Tier 3 astronaut
Complete every Research in the Vehicles Tree
Complete every Research in the Missions Tree
Complete a Modular Space Station
Launch a Space Telescope into orbit
Complete missions to every planet in the Solar System in a single game
Complete a mission task with 50 or more Data
Launch a vehicle with a 1% chance of Critical Failure... which explodes
Complete a mission to any of the Outer Planets
Complete a Joint Mission
Complete Human in Space, Orbital EVA, Mulitcrew Orbit, and Crewed Moon Landing using the same astronaut
Launch a mission using a reusable spaceplane
Complete the Crewed Moon Landing mission
Land on the Moon before any other space agency
Launch a crewed moon mission using a Saturn V booster
Complete a Challenging Request Mission
Complete a mission task that requires Drift to be exactly 0
Construct a small, medium, and large launchpad
Have a single building with 6 active Positive Adjacency effects
Complete an Orbital EVA
Complete the Bonus Objective of a mission task that involves Heat
Complete every Bonus Objective on a mission with at least 3 tasks
Complete a mission to any of the Inner Planets, excluding Earth
Unlock an Era Completion reward in a Research Tree
Launch a human into Earth orbit
Achieve a mission task's Bonus Objective with the last Command of the last turn
Launch any vehicle except Sounding Rocket with 99% Launch Reliability
Complete all Tutorial Objectives
Reach the maximum Experience Level for a vehicle part
Launch an animal into Earth orbit
Place an Artificial Satellite in orbit
Complete the Bonus Objective of a mission task
Complete a mission with a Payload that has 99% Payload Reliability
Finish 1st in every Milestone mission in a single game on normal difficulty or above
Land humans on Mars in a Joint mission with another agency
Explode a Sounding Rocket
Launch any vehicle except Sounding Rocket with 50% or lower Launch Reliability
Complete a Joint mission with an Antagonistic agency
Complete a Publicised Request Mission using a Celebrity astronaut
Complete a mission using an astronaut above the age of 70
Become Allied with all other agencies
Complete a mission task with 1% Payload Reliability at the end of it
Win the Race to Mars on very hard difficulty
Win the Race to Mars with all 5 space agencies
Complete every other Mars Horizon achievement
Win the race to Mars on Iron Core
Fly a helicopter on Mars?!
Successfully land a reusable rocket
Successfully complete the Space Tourism request mission
Explore Mars using the Zhurong Rover.
Successfully completed the Philae Landing mission.