Here is the full list of all 65 Project Amalthea: Battlegrounds achievements.
Invested in at least one Starcoin
Made your way to the Amalthea 2 station
Complete a round of Capture The Flag Blitz game
Complete a round of Capture The Flag game
Complete a round of Battle Royale game
Complete a round of King of the Hill game
Complete a round of Race game
Complete a round of Dungeon game
Have a Fighter class character
Have a Tank class character
Have a Scout class character
Have a Specialist class character
Have an Engineer class character
Have a Manager class character
Achieve Legionary rank
Achieve Duplicarius rank
Achieve Evocatus rank
Achieve Immunes rank
Achieve Decanus battle rank
Achieve Aquilifer battle rank
Achieve Decurion battle rank
Achieve Tesserarius battle rank
Achieve Optio battle rank
Achieve Centurion battle rank
Achieve Primus Pilus battle rank
Achieve Praefectus battle rank
Achieve Tribunus battle rank
Achieve Legate battle rank
Achieve 2 victories on any map
Achieve 4 victories on any map
Achieve 10 victories on any map
Achieve 50 victories on any map
Achieve 100 victories on any map
Lose 10 times on any map
Lose 50 times on any map
Lose 100 times on any map
Lose 150 times on any map
Lose 300 times on any map
Repair 2 000 shield or hull points
Repair 4 000 shield or hull points
Repair 10 000 shield or hull points
Repair 30 000 shield or hull points
Repair 50 000 shield or hull points
Deal 4 000 damage to enemy ships
Deal 8 000 damage to enemy ships
Deal 90 000 damage to enemy ships
Deal 300 000 damage to enemy ships
Deal 1 200 000 damage to enemy ships
Capture 5 enemy flags in CTF games
Capture 10 enemy flags in CTF games
Capture 20 enemy flags in CTF games
Capture 60 enemy flags in CTF games
Capture 200 enemy flags in CTF games
Defend your flag for 5 times in CTF battles
Defend your flag for 10 times in CTF battles
Defend your flag for 20 times in CTF battles
Defend your flag for 60 times in CTF battles
Defend your flag for 200 times in CTF battles
Destroy 5 enemy ships
Destroy 10 enemy ships
Destroy 50 enemy ships
Destroy 100 enemy ships
Arrive at Jupiter orbit
Play a Dungeon game right after the tutorial