Here is the full list of all 16 500 Years Act 1 achievements.
Defeat every enemy ship type.
Defeat ant hive.
Defeat pirate queen.
Defeat human destroyer.
Get all power ups for the ship.
Complete Act 1.
Skip a battle.
Complete game without skipping any battles.
Save Mary.
Recruit Clarence.
Recruit Jarvis.
Recruit Frank.
Recruit Yepp.
Skip 10 Battles
Visit every solar system.
Defeat Llaxon Destroyer.