You change weapons, repeat the same attack and see another disappointing result. Before replacing the whole build, work out what the encounter is telling you. Reduced damage and no valid effect can point to different mechanics.
Game terminology is not universal. An immunity label, resistance statistic, shield phase and missed hit can behave differently across titles. Use the current game’s descriptions and encounter rules rather than assuming that a familiar word carries the same formula everywhere.
Separate three observations
First, confirm that the attack actually connects. Range, line of sight, invulnerability frames or a protected target part may explain an apparent failure.
Second, look for explicit feedback about the damage type or status effect. A boss might take an attack’s direct damage while refusing its stun or poison. Treating those components as one result can hide what is still working.
Third, check whether the restriction is permanent or belongs to a particular phase. An encounter that requires breaking a shield poses a different problem from an enemy that always ignores one status condition.
Change one relevant part of the loadout
In a fictional example, an attack normally dealing 100 damage might deal 60 against a resistant target. An immune target could reject that damage component entirely. These numbers illustrate the distinction only; they are not a formula for any particular game.
Try an alternative that addresses the observed restriction, then compare under similar conditions. Keep buffs, target phase and attack placement consistent where possible. Swapping equipment, difficulty and consumables at once makes the result harder to interpret.
Keep a short encounter note: what connected, what feedback appeared and what changed in the next attempt. If a patch or difficulty mode changes the fight, revisit the note rather than treating it as permanent knowledge.
The aim is a useful response to the mechanic. Sometimes that means another damage type; sometimes it means waiting, repositioning or completing an encounter objective before damage matters again.