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