Here is the full list of all 37 Flinthook achievements.
You've collected all Black Market Items
Arr! You've obtained all of the achievements!
You've collected all the ancient relics!
You've collected all of the galaxy's Lore!
You've collected all the Perks!
This great score against Gwarlock grants you the Oh Snap Relic!
You've defeated every Rex versions of the bounties!
You've saved Gwarlock! The Lighthouse is lit once more. Peace returns to the cosmos!
You've handed Gwarlock a speedy defeat! You win the Golden Gwarlock Relic!
You've freed the Dueling Deaths from their curse!
You've beaten Tusky Grimble!
A good score during the Infinite Mode earns you the Silver Infinite Run Relic!
A solid score during the Infinite Mode wins the Golden Infinite Relic!
Making short work of Gwarlock, earns you the Silver Gwarlock relic!
This great score against Bad Billy Bullseye grants you the Blink Relic!
This great score against Baron Von Guu grants you the Oozed Relic!
You've beaten Vorace Horace!
A good score against Baron Von Guu, earns you the Broken Glass Relic!
Making short work of Baron Von Guu, earns you the Silver Von Guu relic!
You've handed Baron Von Guu a speedy defeat! You win the Golden Von Guu Relic!
You've wrecked an enormous amount of ships! It's only natural to get the Shipwrecker Relic!
Rising through the levels! The Space Captain Relic is yours!
This great score against Admiral Goldfeathers grants you the Fast Plucker Relic!
Making short work of Admiral Goldfeathers, earns you the Silver Goldfeathers relic!
You've handed Admiral Goldfeathers a speedy defeat! You win the Golden Goldfeathers Relic!
Making short work of Bad Billy Bullseye, earns you the Silver Bullseye relic!
You've handed Bad Billy Bullseye a speedy defeat! You win the Golden Bullseye Relic!
This great score during the Infinite Mode grants you the Bronze Infinite Run Relic!
You've defeated Gwarlock. But maybe there's a better way?
A good score against Gwarlock, earns you the Fingersnap Relic!
After many levels, you've won the Quarter Master Relic!
A good score against Bad Billy Bullseye, earns you the Twitch Relic!
You've beaten Baron Von Guu!
You're leveling up! You've claimed the Star Sailor Relic!
A good score against Admiral Goldfeathers, earns you the Roasted Relic!
You've beaten Admiral Goldfeathers!
You've beaten Bad Billy Bullseye!