Full list of all 12 Jet Set Knights achievements worth 1,000 gamerscore. It takes around 1-2 hours to unlock all of the achievements on Xbox One.
Find 1000 Coins
Shot 500 Arrows
Shot 250 Ice Arrows
Shot 250 Fire Arrows
Die 20 Times
Defeat 600 Monsters
Build 20x Guard Tower
Slay the Octopus Boss
Slay the Big Ape Boss
Slay the Snowman Boss
Destroy the Robot Boss
Slay the Muffin Boss