Arms of God Act 4 Walkthrough — Cathedral Zones, Mini-Bosses & Divine Engine Prep

Act 4 Walkthrough Overview

Act 4 is the final stretch — the Cathedral of the Divine Engine. It's the hardest Act by a significant margin, with enemy HP and damage roughly 60% higher than Act 3. This walkthrough covers optimal pathing, hidden zones, mini-boss strategies, and final preparations for Divine Engine Omega.

Recommended Entry Requirements

Before attempting Act 4, you should have:

• At least level 15 on your chosen character

• All weapon slots at Tier 2 or higher (at least one Tier 3 weapon strongly recommended)

• Cathedral upgrades: Movement Speed maxed, HP at level 4+, damage at level 3+

• 3-5 synergistic blessings already unlocked for your build

• At least 500 gold for the Act 4 merchant (he sells unique consumables)

Zone-by-Zone Walkthrough

Zone 1: Cathedral Entrance (Rooms 1-5)

The entrance hallway is a filter — it tests whether your build has enough AoE damage. Clustered enemy packs spawn in waves of 8-12, and they include Shield Bearers (immune to frontal damage) for the first time. Shield Bearers require flanking, so bring a weapon with wide arc or auto-targeting.

Hidden: Break the third stained-glass window on the left wall. A secret room contains an elite that drops a guaranteed rare blessing.

Zone 2: The Choir (Rooms 6-12)

The Choir introduces "Chanting Priests" — support enemies that buff all enemies in the room. Kill Priests first. Always. A buffed elite with +40% damage and +30% attack speed can end your run in seconds.

Key room: Room 9 has a guaranteed Rest Shrine (full HP restore + blessing upgrade). If you're below 50% HP entering Room 9, rush to the Shrine before engaging enemies.

Zone 3: The Archives (Rooms 13-18)

The Archives are a maze of bookshelves. Enemy density is lower but individual enemies are elite-tier with high HP. This zone rewards single-target DPS over AoE. The path splits at Room 15: left leads to a hidden lore room with a unique blessing, right continues the main path.

Hidden boss: If you've collected all 6 lore tablets in Act 1-3, a hidden mini-boss spawns in Room 16. It drops a unique legendary weapon component.

Zone 4: The Spire (Rooms 19-24)

Vertical climb with environmental hazards. Falling debris deals 30% max HP damage — keep moving. The Spire's elite enemies are "Ascended" versions of Act 1-3 bosses with buffed stats. Treat each one like a mini-boss fight.

Final room: Room 24 is the preparation chamber before Divine Engine Omega. A full Rest Shrine, a merchant with unique consumables (buy the "Divine Barrier" — it blocks one OHKO attack during the final boss), and a weapon merge station.

Final Boss Preparation Checklist

Before engaging Divine Engine Omega:

• [ ] HP at 100% (use Rest Shrine)

• [ ] All 5 weapon slots at maximum merges

• [ ] Divine Barrier consumable purchased

• [ ] Divine Form fully charged (farm the last wave of adds before the boss room if needed)

• [ ] Blessing build finalized — you cannot change blessings during the fight

• [ ] Movement speed blessing equipped — you'll need it for laser patterns

Act 4 Enemy Priority

1. Chanting Priest — Always #1. Buffs make everything else lethal.

2. Shield Bearer — Flank or use AoE to bypass shield.

3. Ascended Elite — Treat as mini-boss. Use cooldowns.

4. Standard adds — Clean up last, they're not threatening individually.