Octo Armada

1. 
   Octo Hunter I

   Kill 200 Octos
   73%
2. 
   Octo Hunter II

   Kill 5000 Octos
   60%
3. 
   Octo Hunter III

   Kill 20000 Octos
   40%
4. 
   First Casualty

   Die for the first time
   87%
5. 
   Deadly WeaponSecret

   Steam withholds the description of a secret achievement.
   60%
6. 
   Tank I

   Reach 100 Max Health
   80%
7. 
   Tank II

   Reach 500 Max Health
   27%
8. 
   Rapid Fire I

   Reach +100% Fire Rate
   67%
9. 
   Rapid Fire II

   Reach +300% Fire Rate
   40%
10. 
    Experienced Pilot

    Reach Level 20
    73%
11. 
    Ace Pilot

    Reach Level 40
    67%
12. 
    Greatest Pilot

    Reach Level 60
    60%
13. 
    Overkill I

    Deal 500 or more damage in a single hit
    53%
14. 
    Overkill II

    Deal 1000 or more damage in a single hit
    47%
15. 
    Octo Reaper

    Kill 15 Octos within 2 seconds
    67%
16. 
    Maximum Caliber

    Reach the maximum projectile size
    60%
17. 
    Untouchable

    Reach 60% Dodge Chance
    40%
18. 
    Ghost ShipSecret

    Steam withholds the description of a secret achievement.
    40%
19. 
    Space Carrier

    Have 4 Companions simultaneously
    40%
20. 
    Critical Enthusiast

    Reach 100% Critical Chance
    47%
21. 
    Critical Fanatic

    Reach 4x Critical Multiplier
    40%
22. 
    Relentless PilotSecret

    Steam withholds the description of a secret achievement.
    67%
23. 
    Unstoppable PilotSecret

    Steam withholds the description of a secret achievement.
    47%
24. 
    Too Many Choices

    Have 8 cards to choose from in the shop at once
    47%
25. 
    Octo OBLITERATOR

    Kill 30 Octos within 2 seconds
    60%
26. 
    First Upgrade

    Buy your first upgrade
    60%
27. 
    Optimized System

    Buy all levels of an upgrade
    53%
28. 
    Scarab

    Unlock Scarab
    53%
29. 
    Drakon

    Unlock Drakon
    53%
30. 
    Lightspeed I

    Reach +100% Move Speed
    60%
31. 
    Lightspeed II

    Reach +300% Move Speed
    27%
32. 
    Magnetized

    Reach 100% Attract Chance
    40%
33. 
    Reinforced Plating

    Reach 20 Armor
    53%
34. 
    Titanium Plating

    Reach 40 Armor
    33%
35. 
    Sentinel Master

    Survive 10 minutes with the Sentinel
    53%
36. 
    Scarab Master

    Survive 10 minutes with the Scarab
    47%
37. 
    Drakon Master

    Survive 10 minutes with the Drakon
    33%

Names, descriptions and icons are the game’s own, as Steam publishes them; the share is how many owners have unlocked each, from Steam's global figures for 37 of them.