Full list of all 11 Radio Squid achievements worth 1,000 gamerscore. It takes around 0.5-1 hour to unlock all of the achievements on Xbox One.
Beat a boss on floor 1.
Beat a boss on floor 2.
Beat a boss on floor 3.
Use bombs to clear bullets 5 times.
Kill 10 enemies.
Kill 20 enemies.
Have at least 30 coins on your possesion at any given time.
Have at least 50 coins on your possession at any time.
Collect 5 items that are not coins.
Wrap around the side of the stage 10 times.