Idle Guild Master Assassin Doctrine Guide: Pick Ruin at Max Level (Night Lament / Night Terror)

# Scope

Version-sensitive This page covers vanilla Idle Guild Master only. Plus-mod characters and scenes are out of scope.

# Why Ruin

Community Knowledge Ruin is the damage default for Night Rogues, Night Lament, and Night Terror. In practice that means pushing crit toward 100%, taking extra-attack and rage-bound nodes, and keeping a large final-damage bonus. One commonly repeated summary is about 100% crit rate/damage, roughly 45% double-attack chance, and a constant final-damage bump.^[7]

Recommendation Mainstream pick: Ruin at doctrine unlock. Night Terror and Night Lament threads treat other damage doctrines as clearly weaker for this line; solo farming claims also cluster on Ruin rather than War.^[6][3][4]

# Minority notes

Community Knowledge Ruin is still the mainstream answer, but the same Night Terror thread is not unanimous. A minority keeps War for bow-focused leveling stages (for example with Infinity / Infernal bow before a later respec), and at least one player suggests Affliction for Temple Raid solo. Those are situational exceptions, not the default Night Lament pick.^[1]

Community Knowledge War is also the preferred doctrine for other rogue-adjacent lines such as duelist or Divine Champion. Do not copy that pick onto Night Lament by default.^[5]

Recommendation Once crit is already capped, skip redundant Expose Weakness points and spend remaining doctrine points on extra attacks and rage-bound style nodes instead.^[8]

# How doctrines unlock

Observed Game Fact Community instructions say units need to hit max tier/level (often 45/45) and reset toward the basic class before doctrines become available^[9]. Confirm the reset cost in your client before committing.

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