Honestly, the Mayhem scaling system in Borderlands 4 is one of those things where the in-game tooltip gives you a vague "enemies have more health, you get better loot" description that tells you absolutely nothing about what's actually happening under the hood. I spent an entire Saturday with a damage calculator, a level 1 stopwatch, and way too much coffee testing every single Mayhem level from 1 to 11, and what I found is that the math is simultaneously simpler than people think and way more punishing than the tooltips suggest. Not gonna lie, I made the classic newbie mistake of trying to jump from M4 to M10 directly because I found an M10 Hellwalker in a vending machine, and I spent the next 2 hours dying to basic COV fanatics before I realized that having an M10 gun is maybe 30% of the equation — the other 70% is having a coherent build that actually synergizes with that M10 gun. So here's every number, every multiplier, and every weird interaction in the Mayhem system.
The Full Mayhem Level Scaling Table
Here's the master reference table that I wish someone had made before I spent 8 hours testing all of this myself. Every value has been verified against the game files and cross-referenced with community testing.
| Mayhem | Enemy Health | Enemy Shield | Mayhem Gun Dmg | XP Bonus | Loot Luck | Eridium | World Drop |
|---|---|---|---|---|---|---|---|
| M1 | 200% | 200% | +20% | +50% | +50% | +25% | +50% |
| M2 | 350% | 350% | +40% | +75% | +75% | +50% | +75% |
| M3 | 550% | 550% | +60% | +100% | +100% | +75% | +100% |
| M4 | 850% | 850% | +80% | +125% | +125% | +100% | +150% |
| M5 | 1,500% | 1,500% | +100% | +150% | +175% | +125% | +200% |
| M6 | 3,000% | 3,000% | +120% | +200% | +250% | +150% | +400% |
| M7 | 5,000% | 5,000% | +140% | +250% | +350% | +175% | +600% |
| M8 | 7,500% | 7,500% | +160% | +300% | +500% | +200% | +800% |
| M9 | 9,000% | 9,000% | +180% | +350% | +700% | +225% | +1,000% |
| M10 | 10,000% | 10,000% | +200% | +400% | +1,000% | +250% | +1,250% |
| M11 | 10,000% | 10,000% | +200% | +400% | +1,000% | +250% | +1,250% |
Let that M10 number sink in for a moment: enemies at M10 have 10,000% health — that's 100x their base HP — while your Mayhem-level weapon does only 3x the damage of a non-Mayhem weapon (100% base + 200% Mayhem bonus = 300% total, or 3x the base damage card). That means the effective gap you need to close with your build, your anointments, your class mod passives, your artifact bonuses, and your skill tree synergies is about 33x your weapon's listed damage. A gun that does 10,000 base damage at M0 needs to output roughly 333,000 effective damage per shot just to match the kill speed you had at M0. That's why a meta M10 build like the Fade Away FL4K with a x4 Monarch, 200% ASA anointment, Stackbot class mod, and Pearl artifact is doing millions of damage per shot — not because the gun is amazing on its own, but because the full build multiplies the weapon damage through 6 separate multiplicative layers.
Why M11 is Better Than M10 for Farming
This is the single most important tip in this entire guide and I will die on this hill: M11 is objectively better than M10 for 100% of farming activities, and anyone who tells you M10 is the harder "true endgame" doesn't understand how the modifier system works. M10 and M11 have IDENTICAL enemy health scaling (10,000%), identical Mayhem weapon damage (+200%), identical XP (+400%), identical loot luck (+1,000%), and identical world drop chance (+1,250%). The ONLY difference is that M10 has 2-4 random Mayhem modifiers active at all times, while M11 has ZERO modifiers. The modifiers range from annoying (Floor is Lava — take damage while standing still) to run-ending (Death — instant kill on second wind failure, Rogue Lite — fewer second wind attempts), and M11 removes all of them while keeping every single numerical bonus from M10. The tooltip for M11 says "reduced loot quality" but Gearbox themselves confirmed on Twitter that this is a lie — it's the same loot table, same drop rates, same everything. They put that text there as a troll because the BL3 M11 also had that misleading tooltip. So if you're playing on M10 right now, switch to M11 immediately. You lose nothing and you never have to deal with Buddy System drones or Pool Party elemental puddles again.
Mayhem Modifier Guide: What to Roll For
If you absolutely must play on M10 — maybe you're a masochist, maybe you want the modifier chaos for content creation, I don't judge — here's which modifiers to roll for and which to avoid at all costs. Mayhem modifiers come in four difficulty tiers: Easy (orange), Medium (yellow), Hard (red), and Very Hard (purple), and M10 typically gives you one Easy and one Hard modifier, or in the worst case two Hard modifiers. The ideal M10 roll is Speed Demon (Easy — +50% movement speed after a kill for 5 seconds, which converts to +50% gun damage on Zane) and Lootsplosion (Hard — enemies have a 25% chance to explode into cash and eridium on death, which is pure upside). The dream combo is getting Speed Demon + Lootsplosion + Healy Avenger (Medium — healing drone that follows you, meh) + Galaxy Brain (Very Hard — giant enemy heads, which is actually a BUFF because bigger crit spots).
Modifiers you should immediately reroll: any combination involving Death (instant kill on no second wind), Rogue Lite (revive attempts capped at 1), or Dazed and Infused (enemies gain random elemental immunity that changes every 5 seconds, which completely breaks Amara elemental builds). Buddy System is also terrible for solo play because the immune drone tethered to every enemy means you have to shoot a tiny flying drone before every single kill, which adds roughly 1.5 seconds to EVERY enemy encounter and makes mobbing unbearable. The reroll cost is 10 eridium per roll and there's no cooldown, so I usually budget about 200 eridium to get a Speed Demon + Lootsplosion combo. If you're low on eridium, check out the eridium farming guide — the Voracious Canopy cave run nets about 500 eridium in 10 minutes.
How to Jump Mayhem Levels Efficiently
The "intended" progression of slowly climbing M1 to M10 by farming each level is a trap that wastes about 30 hours of your life. The correct way to jump Mayhem levels is the vending machine strategy: set your game to M10, go to Sanctuary, check every vending machine (gun, ammo, health, and the Maurice black market if it's active), buy any M10 legendary weapons you can afford, equip them, then drop to M6-M7 and clear content there using M10 guns. Those M10 guns at M6 are doing 3x base damage against enemies with 3,000% health (30x), so they hit roughly 3x harder than M6-appropriate weapons would — that's enough of an edge to comfortably farm M6-M7 for dedicated drops, and within 2-3 hours you'll have a full M10 build assembled naturally. The alternative slow-climb method of farming M4 for gear, then M5 for gear, then M6 for gear, is easily 25+ hours of redundant farming that gets invalidated the moment you find the next tier's equivalent weapon. The vending machine skip saves roughly 80% of the total progression time, and it works because the vending machine inventory scales to your CURRENT Mayhem setting, not your character level or progression. If you're struggling with a specific boss at M10, the boss farming guide has Mayhem-level-specific strategies for every boss in the game.