Direct answer

Quasimorph perks are trigger or passive. Compare four verified perks, their level 1 and level 4 effects, class fit, and exact XP actions.

Trigger perks vs passive perks

Trigger perks activate automatically when their own condition is met. They provide a temporary bonus, gain experience when triggered, and consume calories when activated.

Passive perks stay active continuously. They gain experience from the behavior named in the perk, such as firing a specific weapon or having armor reduce a physical hit.

The practical difference between Quasimorph perk types
Perk typeWhen it worksHow it levelsPlanning concern
TriggerAutomatically after its condition occursXP from successful activationsTemporary effect and calorie use
PassiveContinuouslyXP from the action named by the perkOnly grows when the build repeats that action

Four verified perk examples

These examples show why the leveling action matters as much as the final bonus. Agent Training rewards pistol fire, Assault Reflex rewards missed enemy attacks, Gear Maintenance rewards armor doing its job, and Grenadier rewards explosive weapon use.

The official Wiki lists Assault Reflex as Trigger in its perk data even though the page's short Details sentence calls it passive. The trigger field matches its missed-attack activation rule, so this guide uses Trigger.

Verified level 1, level 4, and XP data
Perk and classTypeLevel 1Level 4How it gains XP
Agent Training — Spaceborn GhostsPassivePistol accuracy +15%; range +1Pistol accuracy +30%; range +22 XP per pistol shot
Assault Reflex — Scouts of Hades / Spaceborn GhostsTrigger+1 AP for 2 turns+3 AP for 3 turns5 XP when an enemy attack misses and triggers it
Gear Maintenance — Scouts of HadesPassivePhysical resistance +15%; armor durability +15%Physical resistance +30%; armor durability +60%2 XP when armor reduces a physical hit
Grenadier — Tifton's ElitePassiveExplosion damage +25%Explosion damage +55%25 XP per grenade throw or grenade launcher shot
Agent Training perk icon
Agent Training grows through pistol use.
Grenadier perk icon
Grenadier also affects mines according to the Wiki entry.

Choose the action you will actually repeat

Do not choose a perk only for its level 4 number. Choose the action loop first, then confirm that the perk earns XP during that loop without forcing unsafe play.

A pistol route naturally develops Agent Training. A dodge-focused Scout or Ghost can trigger Assault Reflex. Armor-first Scouts can develop Gear Maintenance under physical pressure. Explosive builds can combine Grenadier with grenades, launchers, and mines.