Borderlands Wiki

One Last Thing is a tier 5 skill in Claptrap's Boomtrap skill tree.
It allows Claptrap's last bullet in the clip/magazine to deal bonus damage.


  • Bonus damage of last round: up to +80% per level skill depending on magazine size
  • Clip Size for Full Bonus: 8
Level 1 2 3 4 5
Last Shot Bonus +80% +160% +240% +320% +400%
  • Additional levels may be acquired by using Sapper class mod.
Level 6 7 8 9 10 11
Last Shot Bonus +480% +560% +640% +720% +800% +880%


  • One Last Thing applies to splash damage as well as bullet damage. On weapons that deal both splash and bullet damage, however, the splash damage bonus is applied on the second to last shot while the bullet damage bonus is applied on the left. This synergizes well with Torgue Ravager shotguns with a magazine size of 8, as the increased ammo consumption allows for every shot to gain a damage bonus.
  • The bonus damage is equal to
  • Despite having a small magazine, Plunkett's ability to drain spare ammo on critical hits allows Claptrap to maintain the damage bonus for much longer, provided if he continually scores critical hits.


Claptrap skills
Boomtrap I Love You Guys! Fragmented Fragtrap