Endurance is a tier 4 augment skill in FL4K's Master skill tree. While this skill is equipped, when FL4K or their pet kills an enemy, the duration of Gamma Burst is extended and the pet gains a damage bonus. These effects stack up to five times.

This skill requires Gamma Burst to be equipped.


  • Skill Duration: +3 seconds per kill
  • Pet Damage: +10% per kill


FL4K skills
Master Stalker Hunter
Community content is available under CC-BY-SA unless otherwise noted.