Iron-Willed by the numbers
Set Iron-Willed next to Brave and the pitch writes itself: courage +0.12 on both, but the threat rider drops from Brave’s +0.08 to +0.06. Identical nerve, a quarter less enemy attention. Everything Brave does for a hero’s willingness to hold ground when a delve turns bad, Iron-Willed does for a smaller cut of the party’s incoming pressure.
That discount changes where the trait can live. On the four-rung courage ladder (Brave, Iron-Willed, Dauntless at +0.18 courage and +0.09 threat, Unbreakable Will at +0.25 and +0.10), Iron-Willed is the rung with the lightest rider in absolute terms, which makes it the one you can put on a hero who was never supposed to be a target. Its courage-per-threat ratio of 2.0 matches Dauntless exactly; the difference between those two rungs is dose. Efficiency is identical. Dauntless buys half again more of both numbers.
One more neighbour matters. Stoic grants the same +0.12 courage with no threat rider at all, paying instead with a −0.06 recklessness damper. Between the two, the honest framing is this: Iron-Willed keeps a residual sliver of enemy attention, Stoic keeps a residual sliver of caution. A hero whose role tolerates being looked at occasionally loses nothing to Iron-Willed; a hero whose role involves the odd bold play loses nothing to Stoic. Neither is strictly better, but for most back-line heroes, either beats Brave.
How the discount plays out in a delve
Courage shows up in the delve report as an absence: no “hung back”, no “broke early”, no round where a quarter of your action economy evaporated because one hero’s AI scored retreat above everything else. With four heroes and no direct control, a single falter cascades: the remaining three take more pressure, which pushes their own courage checks closer to the edge. Iron-Willed heroes are the ones still contributing an action in the rounds where the report gets ugly.
Where the +0.06 threat rider shows is subtler. Across a long floor, an Iron-Willed hero absorbs a little more enemy attention than a trait-neutral one. That is noticeably less than a Brave party-mate draws, though still some. In conditions that stretch fights, flooded halls or darkness, every round is another roll of that multiplier, so the rider costs proportionally more on attrition floors than on fast ones. Read a few reports side by side and the pattern is visible: the Iron-Willed hero soaks slightly above their share, and holds anyway.
Failure mode: courage is not armour. A hero who refuses to fold on a lost floor is spending health to make a point. Iron-Willed keeps a doomed position manned one round longer than a neutral hero would, and under permadeath that extra round is occasionally the one that kills them. The trait needs a party built to reward stubbornness as well as exhibit it.
Roles and pairings
Because the rider is the ladder’s smallest, Iron-Willed is the courage trait for heroes you do not want targeted: damage dealers, skirmishers, and, with slightly more caution, healers and supports. It hands them the morale floor of a front-liner without repainting the target on their back the way Brave does. On a dedicated anchor, meanwhile, it is mildly wasted: a tank often wants the bigger threat rider, and Brave or Dauntless serves that role better per coin spent.
Pairings follow the usual courage logic. Protectiveness traits elsewhere in the party (Loyal and Team Player at +0.4, Field Medic at +0.42) cover the modest extra attention the rider invites. On the same hero, Iron-Willed sits happily alongside discipline traits like Professional or Steady. Nerve plus formation-keeping is the temperament of a hero who does their job in bad rounds, which is most of what a manager can ask. The full coefficient table at /trait makes these stacking checks quick.
Market value, oaths, and when to pass
Scouts and sellers rarely price the two lower rungs apart, and that is your opening: whenever an Iron-Willed recruit and a Brave one cost the same, take Iron-Willed for any role that is not a dedicated front-liner. Same courage, smaller tax. The reverse trade also exists: paying an Iron-Willed premium for a pure tank is buying the wrong rung, since the anchor wanted the attention you just paid to avoid.
Ageing is friendly, as with all behaviour coefficients: the nerve does not decay alongside attributes, so an Iron-Willed veteran remains useful in exactly the rounds where experience matters. At renegotiation time the trait is quiet. It neither hoards killing blows nor inflates reputation, so it rarely moves the number on the table. Run the renewal through the oath negotiator as usual, but expect the trait itself to be a non-factor. Pass only when the sheet is otherwise weak; there is no role where Iron-Willed actively hurts.
Patch record
Neither coefficient has moved in any build this wiki tracks: courage +0.12 and threat +0.06 are byte-identical from v1.9.6 through v2.1.8. That makes Iron-Willed as safe a long-term roster investment as the game currently offers: the value you scout today is the value you renew in three seasons.