Armor is the quiet power spike Update 2 added to Be The Final Boss. Each helm, body, and guard piece hands your boss a stat boost plus its own passive, and because those passives stack independently, the smart move is rarely to grab one shiny item. It is to plan a full three-piece set that fits how you actually fight. The rankings below sort every piece by slot so you can see the best target for each one, then commit your Forge Stones without regret.
Quick answer: Void Knight is the strongest set in every slot thanks to top raw stats and the Void Drain lifesteal passive. Hellfire Mantle and Royal Paladin are the next-best endgame targets, while Amethyst Gladiator and Emerald Mantle are the best pieces to build before you can afford Secret-tier gear.
Pieces were ranked on four things: raw stat value for the slot, how useful the passive stays across long runs, cost or source difficulty, and how much a full matching set adds. These placements reflect the Update 2 armor lineup.
Why full sets beat single pieces
Every armor piece grants its passive on its own, so a matching helm, body, and guard from the same set can trigger the same effect three times over. That is why a Void Knight or Hellfire Mantle set feels far stronger than the individual stat lines suggest, and why it is worth committing to one theme instead of mixing rarities. Helm slots lean toward damage, body slots pour everything into HP, and guard slots hand you a balanced mix of both, which makes the guard piece one of the highest-value single items in any set.
Note: Void Knight, Royal Paladin, Emerald Mantle, and the other Forge Stone pieces are crafted, while Hellfire Mantle and Obsidian Plate come from the Battle Pass and the Juggernaut set is a Robux full-set purchase.
Helm tier list
Helms are your damage slot, so the ceiling belongs to pieces that pair a big DMG boost with an offensive or sustain passive. Void Knight tops it with the highest DMG bonus and free lifesteal, while Hellfire Mantle and Juggernaut trade a little safety for extra burst. Amethyst Gladiator is the value pick before you reach the expensive endgame helms.
| Helm | Tier | DMG | Cost | Passive |
|---|---|---|---|---|
 Void Knight (Secret) | S | +75% | 1,400 Stones | Void Drain: each swing heals 12% of damage dealt, up to 2% max HP |
 Hellfire Mantle (Secret) | S | +70% | Battle Pass | Hellfire Nova: every fourth combo hit fires a 12-stud nova for 30% weapon damage |
 Juggernaut (Mythic) | S | +65% | 599 Robux full set | Crushing Finale: fourth hit deals +25% damage and launches heroes 50% farther |
 Royal Paladin (Mythic) | A | +50% | 700 Stones | Last Stand: first drop to 30% HP each battle restores 25% max HP |
 Emerald Mantle (Legendary) | A | +45% | 350 Stones | Verdant Recovery: a kill restores 1% max HP, once per 0.75s |
 Amethyst Gladiator (Epic) | A | +40% | 180 Stones | Gladiator Tempo: +10% attack speed |
 Golden Bastion (Epic) | B | +30% | 120 Stones | Golden Harvest: +20% coin from battle rewards |
 Obsidian Plate (Rare) | B | +20% | Battle Pass | Obsidian Guard: reduce incoming damage by 8% |
 Crimson Vanguard (Uncommon) | C | +10% | 30 Stones | Bloodied Fury: +15% attack when Boss HP is 50% or lower |
Void Knight is the pick if you can afford the 1,400-Stone grind, since the lifesteal keeps aggressive builds alive. Hellfire Mantle edges ahead for melee combo players who reliably land that fourth hit, and Juggernaut hits nearly as hard, though its knockback can shove a low-health hero out of reach. Amethyst Gladiator is the smart early buy because +10% attack speed never becomes dead weight.
Body tier list
Body pieces are pure survivability, so the HP percentages here dwarf what the other slots offer. Void Knight again leads with +130% HP and lifesteal, but Royal Paladin’s Last Stand makes its body the most forgiving anchor for hard pushes. Emerald Mantle and Amethyst Gladiator are the best mid-game bodies before Secret gear arrives.
| Body | Tier | HP | Cost | Passive |
|---|---|---|---|---|
 Void Knight (Secret) | S | +130% | 2,000 Stones | Void Drain: each swing heals 12% of damage dealt, up to 2% max HP |
 Hellfire Mantle (Secret) | S | +120% | Battle Pass | Hellfire Nova: every fourth combo hit fires a 12-stud nova for 30% weapon damage |
 Royal Paladin (Mythic) | S | +100% | 1,000 Stones | Last Stand: first drop to 30% HP each battle restores 25% max HP |
 Juggernaut (Mythic) | A | +105% | 599 Robux full set | Crushing Finale: fourth hit deals +25% damage and launches heroes 50% farther |
 Emerald Mantle (Legendary) | A | +90% | 500 Stones | Verdant Recovery: a kill restores 1% max HP, once per 0.75s |
 Amethyst Gladiator (Epic) | A | +70% | 240 Stones | Gladiator Tempo: +10% attack speed |
 Golden Bastion (Epic) | B | +50% | 160 Stones | Golden Harvest: +20% coin from battle rewards |
 Obsidian Plate (Rare) | B | +30% | Battle Pass | Obsidian Guard: reduce incoming damage by 8% |
 Crimson Vanguard (Uncommon) | C | +15% | 40 Stones | Bloodied Fury: +15% attack when Boss HP is 50% or lower |
Void Knight’s body is the single most cost-hungry piece in the system at 2,000 Stones, but nothing else nearly doubles your HP and heals at the same time. If you would rather play safe, Royal Paladin’s emergency heal rescues runs that Void Knight and Hellfire Mantle simply let slip. Amethyst Gladiator’s +70% HP makes it the easiest strong body to slot in while you save.
Guard tier list
Guard pieces split their budget between DMG and HP, which makes them the glue that finishes a set. Because they contribute to offense and survivability at once, the top guards rank among the best individual armor pieces in the game. Void Knight, Hellfire Mantle, and Royal Paladin lead, with Amethyst Gladiator once again the standout budget choice.
| Guard | Tier | DMG | HP | Passive |
|---|---|---|---|---|
 Void Knight (Secret) — 1,400 Stones | S | +25% | +70% | Void Drain lifesteal |
 Hellfire Mantle (Secret) — Battle Pass | S | +30% | +60% | Hellfire Nova AoE burst |
 Royal Paladin (Mythic) — 700 Stones | S | +20% | +50% | Last Stand clutch heal |
 Juggernaut (Mythic) — 599 Robux full set | A | +22% | +55% | Crushing Finale burst and launch |
 Emerald Mantle (Legendary) — 350 Stones | A | +20% | +30% | Verdant Recovery on-kill heal |
 Amethyst Gladiator (Epic) — 180 Stones | A | +10% | +25% | Gladiator Tempo +10% attack speed |
 Golden Bastion (Epic) — 120 Stones | B | +10% | +20% | Golden Harvest +20% coin |
 Obsidian Plate (Rare) — Battle Pass | B | +5% | +10% | Obsidian Guard 8% damage reduction |
 Crimson Vanguard (Uncommon) — 30 Stones | C | +5% | +5% | Bloodied Fury +15% attack under 50% HP |
Royal Paladin’s guard is the safest recommendation for almost any player, since its balanced stats and Last Stand heal fit full sets, hybrid builds, and panic-button progression alike. Hellfire Mantle rewards players who stay in melee to keep that fourth-hit nova rolling, while Obsidian Plate’s flat 8% damage reduction outlives its Rare rarity as a defensive filler.
Which set to chase first
If Forge Stones are your only currency, aim for a full Void Knight set as the long-term goal and lean on Amethyst Gladiator or Emerald Mantle pieces while you save. Aggressive melee players who own the Battle Pass should prioritize Hellfire Mantle so the nova passive stacks across every slot. Anyone who wants runs that rarely fail should build toward Royal Paladin, since three Last Stand triggers turn a losing fight around. Golden Bastion pieces are worth wearing during pure farming stretches, then swapping out once you push harder content.
Balance shifts happen fast during early access, so treat these placements as the current Update 2 picture rather than a permanent order. The core logic holds regardless of patch: match your set to your playstyle, finish all three slots, and let the stacked passives do the heavy lifting.
