Borderlands 4 Player Uncovers Infinite Damage Build with Vex

A Borderlands 4 content creator has revealed a powerful build that lets Vex the Siren deal virtually unlimited damage. By pairing a rare throwing knife with the Penetrator Augment and her Bloodletter skill trait, players can unleash damage-over-time effects that instantly melt enemies. However, fans eager to try this out should act quickly — Gearbox is expected to patch the exploit soon.

Recent Update and Performance Fixes 🖥️

The discovery comes shortly after a PC-exclusive update aimed at improving game performance. The patch included:

• Optimized settings guides for AMD and Nvidia users.
• A reminder that any graphics adjustments will trigger a shader cache recompile (up to 15 minutes).
• Promises of ongoing fixes for stability and optimization issues.

How the Build Works ⚔️

According to YouTuber NickTew, the build hinges on a specific synergy:

• The Penetrator Augment converts all damage into guaranteed critical hits for five seconds, including DoT effects like bleeding.
• Vex’s Bloodletter skill (from the Vexcalation tree) gives critical hits a chance to trigger additional kinetic damage, stacking over time.
• Together, this combo effectively results in limitless critical damage output.

NickTew demonstrated the setup against the boss Primordial Guardian Inceptus, who was defeated in just seconds after two knife throws. The build reportedly works with low-level weapons and at Ultimate Vault Hunter Rank 5, making it highly efficient for farming Legendary loot.

Limitations and Likely Fix 🛠️

• The build currently does not function in multiplayer, restricting its use to solo play.
• Its overwhelming damage potential appears to be an unintended oversight.
• Given Gearbox’s fast track record with hotfixes, players shouldn’t expect this loophole to last long.

Final Note 💡

For now, Vex players have a rare chance to experience one of the most broken builds in Borderlands history — but the window to enjoy it will likely close very soon.