Full Gameplay Walkthrough...

Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Angel of Death	Kill 10,000 enemies.
Arsenal Expanded	Unlock fifteen Weapons.
Ashes in the Blast	Kill 500 Blastfiends.
Augmented Faith	Unlock five Upgrades.
Bearer of the Crux	Unlock the Crux.
Blessed Arsenal	Rebuild the Gunsmith.
Blessed Sacrifice	Complete Act IV on Inferno using the Martyr.
Blessed by Heaven	Unlock All Blessings.
Blessed for a Moment	Activate a Shrine.
Blood Ritualist	Fully charge the Blood Chalice twenty times.
Blood Tithe	Fill the Blood Chalice.
Borrowed Power	Defeat a boss while under a Shrine Blessing.
Break the Cycle	Destroy a Resurrection Spire.
Breaker of Jaws	Kill 500 Ironmaws.
Brothers Broken	Defeat Brother Tharos and Severin on Nightmare before time runs out.
Call to Crusade	Rebuild the Bell Tower.
Catalog of Sin	Kill every enemy type.
Catalog of War	Unlock ten Weapons Codex.
Cathedral Supply	Collect 1,000 Shards.
Consecrated Slaughter	Kill 2,000 enemies inside the Blood Chalice zone.
Controlled Demolition	Kill 500 Detonants.
Crux Adept	Unlock fifteen Crux upgrades.
Crux Initiate	Unlock twelve Crux upgrades.
Divine Conduit	Activate a Power Relay.
Divine Excess	Achieve 125% Crux Power.
Divine Surge	Kill 5,000 enemies while under a Shrine Blessing.
Divine Terror	Defeat Raziel on Nightmare before time runs out.
Divine Vanguard	Complete Act IV on Inferno using the Primaris.
Dread Hunt	Kill 500 Dreadstalkers.
Echoes of the Crusade	Unlock All Events Codex.
Embrace the Corruption	Collect Corrupted Shards fourty times.
Endless Tithe	Collect 5,000 Shards.
Engine of War	Unlock fifteen Upgrades.
Executioner	Kill 1,000 enemies.
Faces of Hell	Unlock All Enemies Codex.
First Blessings	Unlock five Blessings.
First Invocation	Unlock three Crux upgrades.
Forbidden Knowledge	Unlock All Codex.
Forged in Battle	Merge Weapons 150 Times.
Fragments of Truth	Collect a Sermon of Revelation fragment.
Fragments of War	Open the Chest.
Full Revelation	Achieve 100% Crux Power.
Gates Sealed	Close the Gates of Hell.
Gifts of Heaven	Rebuild the Shrine.
Grave Denied	Destroy fourty Resurrection Spires.
Ground the Leaper	Kill 500 Boneleapers.
Harbinger Broken	Defeat Doom Herald on Inferno before time runs out.
Harvest of Fear	Kill 500 Harrowfiends.
Heaven Denied	Defeat Raziel on Inferno before time runs out.
Heavy Faith	Activate a Power Relay fourty times.
Herald Falls	Defeat Doom Herald on Mercy before time runs out.
Hold the Line	Defend Signal Array fourty times.
Houndbreaker	Kill 500 Hellhounds.
Hymn of Machines	Complete Act IV on Inferno using the Synthar.
Inner Strength	Unlock five Passives.
Iron Will	Defeat Brother Tharos and Severin using only melee weapons.
Iron and Prayer	Rebuild the Forge.
Judgment Delivered	Complete Act IV on Inferno using the Judicator.
Keeper of Faith	Complete Act IV on Inferno using the Custos.
Lightning of the Order	Kill 500 enemies with a Power Relay.
Machine of Faith	Unlock All Upgrades.
Master of Arms	Unlock All Weapons.
Master of Shadows	Complete Act IV on Inferno using the Spectre.
Mute the Choir	Kill 500 Wretchchants.
No Doom Remains	Defeat the Doom Herald on Inferno using only one weapon before time runs out.
No Interruptions	Defend a Signal Array without the Signal Array taking damage.
No Mercy	Kill 500,000 enemies.
No Second Death	Destroy a Resurrection Spire before five enemies are revived.
No Turning Back	Unlock Crux Forcefield.
Nothing Is Wasted	Extract Shards from fourty Chests.
Perfected Vessel	Unlock All Passives.
Purge Protocol	Kill 100,000 enemies.
Rebuild the Order	Rebuild all cathedral buildings.
Revelation Begins	Collect fourty Sermon of Revelation fragments.
Ruinborn - Born of Ruin	Kill 500 Ruinborns.
Sacred Horror	Defeat Raziel on Mercy before time runs out.
Shield and Fury	Defeat Brother Tharos and Severin on Mercy before time runs out.
Silence the Brood	Kill 500 Broodcallers.
Silenced Herald	Defeat Doom Herald on Nightmare before time runs out.
Single Purpose	Defeat the Bishop on Inferno using only one weapon before time runs out.
Strength Through Faith	Unlock fifteen Passives.
Tested by Fire	Defeat Bishop on Inferno before time runs out.
The Armory Archive	Unlock All Weapons Codex.
The Faith Grows	Unlock fifteen Blessings.
The Faith Refined	Rebuild the Confesional.
The Living Storm	Complete Act IV on Inferno using the Voltaris.
The Word Restored	Complete all Sermons of Revelation.
Tools of War	Unlock five Weapons.
Transmission Secured	Defend a Signal Array.
Trial by Faith	Defeat Bishop on Mercy before time runs out.
Trial by Fire	Complete Act IV on Inferno using the Incendius.
Twisted Path	Survive the Corrupted Shards effect.
Two Graves	Defeat Brother Tharos and Severin on Inferno before time runs out.
Unravel the Flesh	Kill 500 Fleshweavers.
Unyielding Faith	Defeat Bishop on Nightmare before time runs out.
Unyielding Warden	Complete Act IV on Inferno using the Warden.
Vow Fulfilled	Complete Path of the Crux fourty times.
Walk the Stations	Complete Path of the Crux.
Whisper of Death	Complete Act IV on Inferno using the Silent Sister.
Words of Wisdom	Unlock All Tips Codex.