Conciseness

The operational core is lean — the 'Regras Duras' do/don't table, the reference routing table, and checkpointed flux assume Claude's competence and explain nothing basic. However, the Godot gap rationale is stated in near-full depth three times ("Godot nao tem cobertura propria aqui" in the intro, the 'Cobertura de Godot' section, and the 'Gap reconhecido' bullet in Fontes), and 'Fontes' includes curatorial meta-commentary ("o repositorio tem 66 skills cobrindo dominios fora de jogo (React, Django, Kubernetes, etc.)") that is trimmable, matching anchor 4 rather than 5.

Actionability

Despite no inline code (by design, per the routing structure), guidance is copy-paste concrete: 'Cachear a referencia em Awake/BeginPlay', 'CompareTag() (Unity) ou enum/gameplay tag (Unreal)', 'UPROPERTY() pra referencia gerenciada, TWeakPtr pra evitar ciclo', with named tools and thresholds ('rodar Unity Profiler ou Unreal Insights, confirmar frame time ≤16ms'). The rules table covers exactly the common cases for this domain, matching anchor 5; per the rubric's scoring note, absence of code in a router-style skill is not penalized when guidance is this actionable.

Workflow Clarity

'Fluxo de Trabalho' gives a clear 5-step sequence with two explicit checkpoints ('confirmar frame time ≤16ms antes de prosseguir', 'rodar teste de latencia/dessincronia antes de liberar') plus a completion checklist in 'Evidencia de Conclusao'. It falls short of anchor 5 because there is no error-recovery feedback loop — nothing says what to do when a checkpoint fails (e.g., frame time exceeds 16ms), leaving a minor validation gap at anchor 4.

Progressive Disclosure

The routing table maps each topic to one of five one-level-deep reference files (all five verified present in references/), with an explicit just-in-time loading instruction ('carregar so o arquivo do motor/topico relevante a task, nao os cinco de cara') and a body that stays a genuine overview — a clear match to anchor 5's 'clear overview with well-signaled one-level-deep references'.

Specificity

It opens with a concrete capability claim ('Skill de implementacao real de codigo de engine de jogo — Unity C# e Unreal C++') and enumerates multiple specific concrete capability areas — patterns ('MonoBehaviour, ScriptableObject, object pooling, state machine, ECS'), performance ('profiling, batching, LOD, culling, garbage collection'), networking ('cliente-servidor, predicao de cliente, lag compensation, serializacao') — with no vague language and comprehensive coverage of its declared scope, including the explicit Godot limitation. This matches anchor 5; it is above anchor 4 because coverage is comprehensive rather than gapped.

Completeness

It explicitly answers both questions: what ('Skill de implementacao real de codigo de engine de jogo — Unity C# e Unreal C++. Cobre padroes de...') and when ('Trigger em: "Unity C#", "Unreal C++", ...'), plus an explicit non-scope boundary ('Nao decide arquitetura de sistema nem balanceamento de numero — para isso ver skill 66'). This is a direct match to anchor 5's 'both what AND when with concrete trigger phrases'; the trigger clause is present, so the completeness-at-3 cap does not apply.

Trigger Term Quality

The explicit 'Trigger em:' list gives 22 natural phrases users would actually say, spanning engine-specific APIs ('UPROPERTY', 'MonoBehaviour', 'Blueprint callable'), PT-BR task phrasings ('otimizar FPS', 'implementar sistema de jogo em Unity'), and synonyms for the same need ('multiplayer networking jogo', 'client-side prediction', 'lag compensation'). This matches anchor 5's comprehensive natural-term coverage; not anchor 4 because synonym and task-level phrasings are present, not missing.

Distinctiveness Conflict Risk

The niche is clear and the triggers are engine-API-specific ('UCLASS', 'ScriptableObject', 'smart pointer Unreal'), which no adjacent skill would claim, and the explicit boundary ('Nao decide arquitetura... para isso ver skill 66') actively routes away from the nearest neighboring skill. Minimal conflict risk, matching anchor 5.