Immortal Codex

A time-limited competitive mode where players challenge rotating bosses to score points and climb a global leaderboard. Each boss has two phases: an initial phase you must clear to reach the Boss Rush phase. Points can only be earned during Boss Rush. At the end of the event players receive Ranking Rewards based on their position and tier (F through SSS). Each boss yields up to 2,500 Immortal Sovereigns.

Sub-Modes

Hellfire Emperor

Summons monsters that move toward him and lose HP over time — on death they deal damage to the boss but restore HP to nearby heroes. Prevent the boss from absorbing these monsters or he gains ATK. Burst him during vulnerable windows.

Mother of Crows

Requires a strategic combination of Piercers and crowd-control units to maximise point accumulation during Boss Rush.

Furious Torrent

Conjures tridents around itself — damage output scales with the number of tridents present. Periodically summons waves of light-armoured airborne enemies. Anti-air heroes are essential.

Wasteland Titan

A powerful boss requiring class-specific hero compositions as dictated by the current Codex restrictions.

Tips & Strategy

Only points earned in the Boss Rush phase count toward your ranking — survive the initial phase quickly to maximise Boss Rush time. Each boss has specific class restrictions or counters; check the current Codex requirements before building your team.