Aerostar

1. 
   What We Left Behind 5

   Strike back against the mutant scurge by eliminating Visor in Stage 1.
2. 
   Quality Over Quantity 5

   Take out the keeper of the enemy's munitions stockpile in Stage 2.
3. 
   Underdeveloped 5

   Destroy the head of the mutants' weapons development division in Stage 3.
4. 
   Orbital Assault 5

   Clear out the enemy space station in Stage 4.
5. 
   Giger Counter 10

   Destroy Diamonte in the depths of the biochemical plant in Stage 5.
6. 
   Respect My Personal Space 10

   Turn the hostile satellite into space debris in Stage 6.
7. 
   Space Cadet 5

   Eliminate the enemy commander in Stage 7 on EASY difficulty or above.
8. 
   Earth Isn't Yours to Conquer 10

   Eliminate the enemy commander in Stage 7 on NORMAL difficulty or above.
9. 
   Songs Will Be Sung of This Day 25

   Eliminate the enemy commander in Stage 7 on HARD difficulty or above.
10. 
    Earth's Finest Defender 25

    Beat the game on SUPER HARD difficulty. [See comments!]
11. 
    Fully Accredited 25

    Beat the game on HARD difficulty or above without using a credit.
12. 
    Rookie Pilot 5

    Achieve a score of 125,000 points!
13. 
    Veteran Aeronaut 10

    Achieve a score of 300,000 points!!
14. 
    Standard Issue 10

    Clear any 3 stages in a row without using an upgrade or losing a life.
15. 
    MOAB 5

    End a boss encounter in 5 seconds or less while equipped with the S-Bomb.
16. 
    Destroy Them With Lazers 5

    Equipped with nothing but the Lazer, blow up 4 enemies in a single attack.
17. 
    Omnipotent 10

    Destroy 50 regular enemies in a row using the Omni-shield without firing your guns or losing a life.
18. 
    Up Your Arsenal 5

    On SUPER HARD difficulty, cycle through every weapon at least once without losing a life.

Achievement names, descriptions and badges are the work of the RetroAchievements community. View this set on RetroAchievements