Animosity

1. 
   Fight Back

   No more hiding.
   8.1%
2. 
   Gatling Gun

   Maximum Pews.
   5.2%
3. 
   Beam Pistol

   If a lighthouse was a gun.
   0.0%
4. 
   Cannon

   Walking liability.
   0.5%
5. 
   Crossbow

   The OG bolter.
   8.1%
6. 
   Rocket Launcher

   Yeet seeking.
   1.1%
7. 
   Phaser

   Set to fun.
   0.5%
8. 
   Rifle

   Creep perforator.
   1.7%
9. 
   Plasma Launcher

   Follow the bouncing ball.
   0.0%
10. 
    Saved Friends

    Save all friends in a level.
    8.1%
11. 
    Saved a Friend

    Rescue your trapped friendo.
    8.1%
12. 
    Ace job

    Get an A score.
    0.0%
13. 
    PVP

    Complete a deathmatch.
    0.5%
14. 
    PVE

    Complete a coop game.
    0.5%
15. 
    Gold Star!

    Beat the game.
    0.0%
16. 
    Beamsword

    You want this, dont you?
    0.0%
17. 
    Royal RevengeSecret

    Steam withholds the description of a secret achievement.
    0.5%
18. 
    Big Slap

    Knock out an ape with one headshot.
    6.3%

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 18 of them.