Contamination is a passive skill under the Killer node on the Specialization skill tree in Borderlands 4. It becomes available when 1 point is invested in Killer.

Effects

Critical Hits grant increased Status Effect Application Chance.

• Stacks: +1 per critical hit
• Status Effect Application Chance per stack: +10%

v • e Specializations Base Nodes Brute Lead or Alive • CQC • Riddle You This Runner Bear Arms • Bullet Train • Groundbreaker Sharpshooter Down But Not Out • In the Zone • One Shot, One Kill Survivor Sturdy Stuff • Bullets Are Scared of Me • The Best Defense Prestige Nodes Daredevil Now With Caffeine • I am a Gun • A Honed Mind Gadgeteer Tripwire • Full Spectrum Arsenal • Fragmentation Payload Killer Contamination • Compounding Afflictions • Overkill