Webthe dot bonus and 'infection' of nearby enemies upon a rad explosion of an enemy is very minor to primary gun damage in mayhem 10. In tvhm or mayhem mode, radiation is. Web9 rows · dec 3, 2019 · enhances elemental damage for elements you are currently suffering damage from. Enhances all radiation effects. Bonus damage and movement. Radiation damage is unlike all the other elements in the game in the sense that it doesn't sport any strengths against certain health types. According to fandom [borderlands. fandom. com] radiation damage do 100 percent damage against flesh, 150 percent damage against shields and 50 percent.