There are several side Quests in Path of Exile that grant players additional Passive Point Quests, up to a total of 24. Making sure to do these during the campaign will ensure your character's power is as high as possible and that you don't have to backtrack after reaching the endgame.
These Quests are listed in the order that you'll encounter them as you progress through the Campaign
Useful Tip
After completing the campaign, you can press Enter and then type /passives to make sure that you've done all of these Quests. If you've missed any, it will state the name of the Quest and you can go back to complete it.
Guide
PART 1
Act 1
The Dweller of the Deep
Location: The Flooded Depths, located within the Submerged Passage
Quest: Slay the Giant Crab affected by an Essence
NPC Hand In: Tarkleigh
Reward: Book of Skill (+1 Passive Point)
The Marooned Mariner
Location: The Ship Graveyard & Ship Graveyard Cave
Quest: Find the Allflame in the Ship Graveyard Cave, return it to Captain Fairgraves and defeat him
NPC Hand In: Bestel
Reward: Book of Skill (+1 Passive Point)
Act 2
Through Sacred Ground
Location: The Crypt Level 2 (The Crypt is located at the end of the Fellshrine Ruins)
Quest: Obtain the Golden Hand (behind Archbishop Geofri, the Abashed)
NPC Hand In: Yeena
Reward: Book of Skill (+1 Passive Point & +2 Passive Respec Points)
The Way Forward
Location: The Western Forest
Quest: Defeat Captain Arteri, pick up the Thaumetic Emblem and open the way to the Prisoner's Gate
NPC Hand In: Bestel (Act 1!)
Reward: Book of Skill (+1 Passive Point)
Deal With the Bandits
For this quest, you can choose to help any one of the three Bandit leaders for a specific reward, or slay all of them for a Passive Skill Point. This choice can be changed at a later stage
Kraityn
Location: The Broken Bridge, beyond the Crossroads
Quest: Help Kraityn, defeat the other two Bandit Leaders
NPC Hand In: Kraityn
Reward: 8% increased Movement Speed
Alira
Location: The Western Forest, beyond The Riverways
Quest: Help Alira, defeat the other two Bandit Leaders
NPC Hand In: Alira
Reward: 15% to All Elemental Resistances
This is a popular choice on league starts as it helps undergeared characters to cap their Resistances earlier
Oak
Location: The Wetlands, beyond The Riverways
Quest: Help Oak, defeat the other two Bandit Leaders
NPC Hand In: Oak
Reward: +40 to Maximum Life
Slay All the Bandits
Location: The Broken Bridge (Kraityn), The Western Forest (Alira), The Wetlands (Oak)
Quest: Defeat all of the Bandit Leaders
NPC Hand In: Eramir
Reward: Book of Skill (+1 Passive Point)
Changing Your Bandit Reward
You can change your Bandit Reward at a later stage, but this is fairly expensive early into a league. This is done with a specific Vendor Recipe, and by selling the following combination of items to a vendor, you will gain the specific Bandit Leader's reward
Bandit Leader
Recipe
Result (Book of Reform)
Kraityn
20x Orb of Regret
Jade Amulet
8% increased Movement Speed
Alira
20x Orb of Regret
Lapis Amulet
15% to all Elemental Resistances
Oak
20x Orb of Regret
Amber Amulet
+40 to Maximum Life
Kill All Bandits
20x Orb of Regret
Onyx Amulet
+1 Passive Skill Point
Act 3
Victaro's Secrets
Location: The Sewers
Quest: Locate all three Busts in The Sewers (hidden under flat-square "Stashes" on the ground, surrounded by a pack of Magic Monsters)
NPC Hand In: Hargan
Reward: Book of Skill (+1 Passive Point & +2 Respec Points)
Piety's Pets
Location: The Lunaris Temple Level 2
Quest: Defeat Piety
NPC Hand In: Grigor (past Clarissa, a bit further up! Easy to miss this guy)
Reward: Book of Skill (+1 Passive Point)
Act 4
An Indomitable Spirit
Location: The Mines Level 2
Quest: Free Deshret's Spirit (you don't need to fight the Unique monster defending her)
NPC Hand In: Tasuni
Reward: Book of Skill (+1 Passive Point & +2 Respec Points)
Act 5
In Service to Science
Location: The Control Blocks
Quest: Locate the Miasmeter (usually hidden in the top-left corner of the area)
NPC Hand In: Vilenta
Reward: Book of Skill (+1 Passive Point)
Kitava's Torments
Location: The Reliquary (located within The Ruined Square)
Quest: Collect the three parts of Kitava's Body (each piece is located in a different corner of the area)
NPC Hand In: Lani
Reward: Book of Skill (+1 Passive Point & +2 Respec Points)
____________________________________________________________________ PART 2
Act 6
Many of the Quests in Act 6 will involve defeating specific Gods and will not only grant Passive Points, but also bonuses on your Pantheon
The Father of War
Location: The Karui Fortress
Quest: Defeat Tukohama
NPC Hand In: Tarkleigh
Reward: Book of Skill (+1 Passive Point)
The Cloven One
Location: The Prisoner's Gate
Quest: Defeat Abberath
NPC Hand In: Bestel
Reward: Book of Skill (+1 Passive Point)
The Puppet Mistress
Location: The Wetlands (located from The Riverways - the same area you found Oak in Act 2!)
Quest: Defeat Ryslatha
NPC Hand In: Tarkleigh
Reward: Book of Skill (+1 Passive Point)
Act 7
The Master of a Million Faces
Location: The Forest Encampment
Quest: Defeat Ralakesh
NPC Hand In: Eramir
Reward: Book of Skill (+1 Passive Point)
Queen of Despair
Location: Dread Thicket (located within The Northern Forest)
Quest: Defeat Gruthkul
NPC Hand In: Eramir
Reward: Book of Skill (+1 Passive Point)
Kishara's Star
Location: The Causeway
Quest: Locate Kishara's Star (usually found in a chest at the end of the Causeway)
NPC Hand In: Weylam
Reward: Book of Skill (+1 Passive Point & +2 Respec Points)
Act 8
Love Is Dead
Location: The Quay
Quest: Find the Ankh of Eternity and kill Tolman (The Ankh can be hard to find. One thing that can help is to, after entering The Quay, hug the left-hand wall and follow it until it opens up to a larger area with the Chest that contains the Ankh. After locating the Ankh, keep looking for the Resurrection Site where you will find Clarissa attempting to revive Tolman)
NPC Hand In: Clarissa
Reward: Book of Skill (+1 Passive Point & +2 Respec Points)
The Gemling Legion
Location: The Grain Gate
Quest: Defeat The Gemling Legion
NPC Hand In: Maramoa
Reward: Book of Skill (+1 Passive Point)
Reflection of Terror
Location: The High Gardens (located within The Bath House)
Quest: Defeat Yugul
NPC Hand In: Sin
Reward: Book of Skill (+1 Passive Point)
Act 9
Queen of the Sands
Location: Vastiri Desert
Quest: Defeat Shakari
NPC Hand In: Irasha
Reward: Book of Skill (+1 Passive Point)
The Ruler of Highgate
Location: The Quarry
Quest: Defeat Garukhan, Queen of the Winds and collect the Sekhema Feather
NPC Hand In: Tasuni or Irasha
Reward: Book of Skill (+1 Passive Point)
Which NPC you give the Sekhema Feather to has no impact on the rest of the game
Act 10
Vilenta's Vengeance
Location: The Control Blocks (located on the far left side of The Ravaged Square)