Here is the full list of all 52 Galactic Junk League achievements.
Upgrade one component
Reach level 10 with the battleship class
Kill 25 enemies with a missile weapon
Win five matches in a row
Win 10 games
Create a new battleship
Create a new frigate ship
Kill 25 enemies with a gauss weapon
Kill 25 enemies
Create a new destroyer ship
Kill an enemy with a missile weapon
Earn 10000 Junk
Kill an enemy with a gauss weapon
Win your first game
Lose one game
Kill an enemy
Kill an enemy with a laser weapon
Earn 1000 Junk
Get five kills in a row without dying
Research one component
Finish the tutorial
Research all weapons
Research all abillities
Win 50 games
Win 100 games
Win 200 games
Kill 250 enemies
Reach level 10 with the frigate class
Reach level 20 with the frigate class
Reach level 30 with the frigate class
Reach level 10 with the cruiser class
Reach level 20 with the cruiser class
Reach level 30 with the cruiser class
Reach level 10 with the destroyer class
Reach level 20 with the destroyer class
Reach level 30 with the destroyer class
Reach level 20 with the battleship class
Reach level 30 with the battleship class
Create a new cruiser ship
Kill 25 enemies with a laser weapon
Kill 100 enemies with a laser weapon
Kill 250 enemies with a laser weapon
Kill 500 enemies with a laser weapon
Kill 100 enemies with a missile weapon
Kill 250 enemies with a missile weapon
Kill 500 enemies with a missile weapon
Kill 100 enemies with a gauss weapon
Kill 250 enemies with a gauss weapon
Kill 500 enemies with a gauss weapon
Win one match with every class
Earn 100000 Junk
Earn 1000000 Junk