Here is the full list of all 31 Space Killer achievements.
Comlete tutorial
Get all upgrades
Kill 1 boss
Kill 2 boss
Kill 3 boss
Kill 4 boss
Kill 5 boss
Buy all ship
Buy new ship
Died first time
Died 100 time
Died 1000 time
Kill 10 enemy
Kill 100 enemy
Kill 1 000 enemy
Kill 10 000 enemy
Kill 1 000 000 enemy
Collect 100 ore
Collect 1 000 ore
Collect 10 000 ore
Collect 1 000 000 ore
Earn 1 000 coin
Earn 10 000 coin
Earn 1 000 000 coin
Unloak all mission
Sell in total for 100 gold
Sell in total for 10 000 gold
Sell in total for 1 000 000 gold
Complete the game
Get 3 Star Ability
Find a module merchant