Arms of God Act 2 Walkthrough — The Sunken Quarter, Cathedral Unlock & Best Mid-Game Builds

Act 2 Walkthrough Overview

Act 2 moves from the fortress ruins of Act 1 into The Sunken Quarter — a flooded district with narrow waterways, vertical climbing sections, and the Cathedral hub that defines the rest of your run. Act 2 has 22 rooms including the Cathedral unlock room, 2 mini-boss encounters, 2 merchants, and 2 Rest Shrines.

The key power spike in Act 2 is unlocking the Cathedral upgrade system. If you miss the Cathedral room entirely, Act 3 and beyond become dramatically harder. This walkthrough ensures you do not miss it.

Recommended Entry Requirements

Entering Act 2, you should have:

• Character level 6-8

• At least one Tier 2 weapon (Varek's drop helps)

• Bastion Key from Act 1 boss

• 2+ blessings unlocked, at least one upgraded

• 100+ gold

Zone-by-Zone Walkthrough

Zone 1: The Docks (Rooms 1-6)

The Docks introduce water mechanics. Shallow water slows movement by 20% but does not affect enemies. Use the wooden walkways whenever possible — the movement penalty is not worth the shorter path.

New enemy: Drowned Cultist. Rises from water without warning. Audio cue is a bubbling sound 1.5 seconds before they emerge. If you hear it, dodge roll immediately — their emergence attack deals heavy damage and applies a 3-second slow.

Room 3: First water puzzle. Three levers on separate platforms, connected by narrow beams. Pull order is left → right → center. Wrong order spawns 2 waves of Drowned Cultists. The center lever is guarded by a Shield Bearer — bring him onto the platform before engaging to avoid falling into water.

Room 5 merchant: Stock up. Buy at least 3 Divine Vials. The mid-game healing economy gets tight if you have been relying on Rest Shrines.

Hidden Room: Room 2. Dive underwater (Ctrl while on water surface) and swim through the submerged archway on the left. Leads to a dry cave with a rare blessing and lore tablet #2.

Zone 2: Cathedral Unlock (Room 7)

Room 7 is the most important room in Act 2. It is not marked on the map and the entrance looks like a dead-end wall. Walk to the back wall of Room 7 and interact with the altar — it requires the Bastion Key from Varek.

Once unlocked, the Cathedral becomes accessible between Acts going forward. Cathedral upgrades are permanent across all runs on that character.

Cathedral upgrade priority for mid-game:

1. Movement Speed → max first. Kiting is the difference between life and death in Act 3+.

2. HP → level 3 minimum. Survives one extra hit from most elites.

3. Damage → level 2 minimum. Damage scaling starts mattering in Act 3.

4. Blessing slots → unlock the third slot (costs 500 gold, save for it).

5. Healing effectiveness → level 1 is enough for now.

Zone 3: The Flooded Catacombs (Rooms 8-14)

The Catacombs are dark, tight corridors with ambush spawns. Enemy density is lower but individual enemies are tougher.

Room 9 mini-boss: Corrupted Bishop (optional)

The Bishop is behind a locked gate that requires 200 gold to open. Fight or skip?

Fight if: You have a fire weapon (Bishop takes 30% extra fire damage), at least 3 Divine Vials, and a level 2+ damage blessing.

Skip if: Your build is struggling, low on healing, or you do not have fire damage.

Bishop fight mechanics:

• Summons 2 Cultists every 45 seconds. Kill them immediately — they heal the Bishop if alive for more than 10 seconds.

• Purple orb attack: 3 orbs that home slowly. Lead them into pillars.

• AOE ground slam: Red circle on the ground, 2-second delay. The radius is exactly half the room — stand in corners.

• Drop: Unique blessing (Bishop's Benediction: +15% damage vs elites and bosses, stacks with other damage blessings).

Room 12 Rest Shrine: Always upgrade your highest-priority blessing. If you beat the Bishop, upgrade Bishop's Benediction here.

Hidden Room: Room 11. Break the cracked wall behind the sarcophagus (look for torch on the left — the wall with no torch is the breakable one). Contains lore tablet #3 and a weapon merge station (free — no gold cost, one-time use).

Zone 4: The Cistern (Rooms 15-22)

The Cistern is a vertical climb. Platforms rise and fall on a timer. Falling into the water at the bottom spawns 3 Drowned Cultists — avoid falls at all costs.

Room 17: Elite encounter against a Corrupted Captain. Pattern: cannon shot (line attack) → hook pull (drags you to melee range) → spin attack. Dodge cannon sideways, dodge hook forward (into the Captain — the hook hitbox is at medium range, not close), then back away for the spin.

Room 19 Rest Shrine: Last shrine before Act 3. Top off HP, final blessing upgrade.

Room 21 merchant: Sells Tier 3 weapon components at a premium. If you have been saving gold, buy one. The jump from Tier 2 to Tier 3 is roughly 40% more base damage.

Room 22 exit: Act 2 boss gate. No boss fight in Act 2 — the gate leads directly to Act 3. This is a good place to use your remaining gold at the Room 21 merchant before moving on.

All Act 2 Collectibles

| # | Item | Location |

|---|------|----------|

| 1 | Lore Tablet #2 | Room 2 underwater cave |

| 2 | Rare Blessing | Room 2 underwater cave |

| 3 | Lore Tablet #3 | Room 11 hidden room |

| 4 | Bishop's Benediction | Corrupted Bishop drop (optional) |

| 5 | Ancient Coin x2 | Room 6 (ledge above merchant), Room 16 (platform far right) |

| 6 | Weapon Merge Station (free) | Room 11 hidden room |

Best Mid-Game Weapon Merges

With the Cathedral unlocked and a free merge in Room 11, Act 2 is where you should execute your first serious weapon merge. Priority:

1. Fire weapon + any physical weapon: Creates a fire/physical hybrid with burn on hit. Excellent general-purpose merge.

2. Shock weapon + ranged weapon: Chain lightning proc on ranged attacks. Best for Arcanist/Gunslinger.

3. Holy weapon + melee weapon: Adds lifesteal on kill. Best for Zealot/Berserker.

Do not merge your only weapon of a damage type — keep one of each element available for enemy resistances in Act 3.

Act 2 Exit Checklist

Before entering Act 3:

• [ ] Cathedral unlocked and at least 3 upgrades purchased

• [ ] At least one Tier 2 weapon at max level

• [ ] 3+ blessings, at least one upgraded to level 2+

• [ ] Bishop's Benediction obtained (if you fought the Bishop)

• [ ] 3+ Divine Vials in inventory

• [ ] Third blessing slot unlocked (if you saved 500 gold)