The Crystal Tracker is a weapon for the Huntress. It is rewarded for completing the "Warping Core" challenge on Insane difficulty.
The crystal tracker tends to have high bonuses to Hero Health and Tower Health (trap charges). The weapon has a fairly large blast radius, with each shot exploding on impact or after traveling a certain distance. With lower single-target DPS compared to the Blasticus, it is less effective against ogres and bosses; however the blast damage makes it superior against small monsters.