Here is the full list of all 56 Project 5: Sightseer achievements.
Visit 27 different biomes.
Take control of a ship.
Build an off-shore rig.
Obtain 1000 Credits.
Obtain 100,000 Credits.
Use a sensor to control something.
Give your outpost a custom paintjob.
Build a defensive turret.
Reach average item level 15 on any vehicle.
Place a vehicle in the garage.
Reach average item level 10 on any vehicle.
Craft a tier 3 weapon.
Revive another unit.
Obtain a positive threat rating.
Reach average item level 5 on any vehicle.
Bring another unit into a combat instance.
Make a cargo drone go collect something.
Build a road.
Research Fringe Science.
Research the Shuttle.
Visit 9 different biomes.
Win a combat instance without dying once.
Heal another unit.
Win a combat instance.
Defeat a boss.
Research Shielded Warfare.
Craft a tier 2 weapon.
Defeat a pirate.
Research Survival Tactics.
Research Fission.
Research an artifact.
Discover a source of radiation.
Research Advanced Sensors.
Research Chemistry.
Take control of a flying vehicle (non-drone).
Exceed the speed of 141 km/h (88 mph) while in a land-based vehicle.
Obtain a negative threat rating.
Accept a trade agreement.
Establish a trade route.
Buy or sell something to a trader.
Upgrade any item using an upgrade kit.
Name your outpost.
Establish your first outpost.
Take control of another land vehicle.
Repair a wreck.
Take control of a drone.
Build a Science Lab and complete your first technology research.
Store 15 different resources in one outpost.
Complete a quest.
Visit 3 different biomes.
Discover an artifact.
Give your vehicle a custom paintjob.
Create a marker.
Have two or more outposts performing research at once.
Craft an item.
Bribe a pirate.