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