Chapter Guide & Boss Walkthrough

Start Strong: First Runs, Resources, and Upgrades

Booster Pack Heroes is an incremental pack-opening game where your army comes from booster packs, spells, and careful upgrade choices. One bad spending order can leave your tower short on defenders before the first boss. This Booster Pack Heroes chapter guide gives you a clear route through every act, from the first Basic Pack to Null the Undefined. Keep the Booster Pack Heroes chapter guide open while you play to plan upgrades, time boss abilities, and avoid wasting Folium on the wrong replay.

Your first job is not to chase the Chapter 1 boss. It is to turn a nearly defenseless tower into an army that can earn rewards. That means stabilizing three resources before you worry about deep progression.

The early portion of this Booster Pack Heroes chapter guide is about building momentum, not rushing. After the opening defeat, follow a tight sequence so your first few runs actually compound.

Your first Shop has 3 Coins, and a Basic Pack costs 2. That limits the opening purchase, so the two-pack quest matters. Completing it raises your regular income and makes the next run less fragile. Do not confuse Mastery with Coins: having enough Mastery for an upgrade does not mean you can afford extra packs for the next battle.

Act 1 Chapter Guide: Chapters 1–3 and the Gate

This part of the Booster Pack Heroes chapter guide covers the first real progression check. Act 1 is short, but it teaches the rhythm you will repeat all game: survive the waves, preserve enough army for the boss, then spend rewards on the next bottleneck.

Chapter 1: Drums in the Dark

The Chapter 1 boss is the first major obstacle because it can deal area damage. Several heroes standing close together is not a safety net. Watch where the previous attempt failed and buy for that specific problem.

Thunderstorm is a useful example. It casts thunderbolts while active, but its duration is limited. Activating it too early can clear a wave and leave you without that damage when the boss appears. Defeating the Chapter 1 boss unlocks Advanced Packs and moves the Gate to the Stars counter to 1/3. The gate will not open yet, so use Chapters 2 and 3 to finish quests and buy combat upgrades instead of replaying the same victory.

Chapters 2 and 3

Chapter 2, Eyes without Hunger, introduces enemies tougher than the opening Cavelings. If your army clears ordinary monsters but stalls on the boss, spend the next Mastery on damage and attack speed rather than more Shop income. The Chapter 2 boss unlocks Magic Packs.

Chapter 3, The Witch from the Abyss, is the final chapter required for the first gate. Keep upgrading the army you can consistently summon, and use Magic Pack options only when they do not leave your opening defense too thin. Defeat the Chapter 3 boss to unlock Royal Packs and move the gate to 3/3. Then interact with the gate and choose Begin Act Two.

Act 2 Chapter Guide: Iron Legion, Relics, and Foil Bosses

The Booster Pack Heroes chapter guide shifts pace after the gate. Act 2 resets your skill tree, but it preserves Folium upgrades, Folium balance, and Collection entries. That means you do not need to empty your Folium before the transition, and old Collection discoveries do not replace the combat nodes you must buy again.

Act 2 opens with the Iron Legion. The reset makes previously upgraded heroes feel weaker until you restore their combat improvements. Rebuild tower HP and starting damage, reopen income quests, then equip a Relic before pushing deeper.

Relics and Slots

Relic Packs begin appearing during Act 2. One early Relic makes every third cursor attack deal double damage and stun the enemies it hits. Open the Relics interface after obtaining your first pack and equip the effect you want.

Additional Relic slots are locked behind destroying Relics. An early requirement asks you to destroy 1 Relic to unlock another slot. Check the requirement before sacrificing anything, and destroy a mismatched Relic rather than one that supplies your main defense or damage.

Chapter 5 and Aegis Ward

Chapter 5 introduces invisible attackers and fast enemies that can rush the tower while other monsters keep your army occupied. Aegis Ward costs 75,000 Mastery and gives the tower a shield equal to 50% of its HP at the beginning of battle. When that shield breaks, it casts Shockwave, damaging and stunning all enemies on the screen.

That makes Aegis Ward a strong answer to early rushes. If the shield breaks early and the tower falls before the strongest wave, improve opening defense. If the shield lasts until the boss but your army cannot finish the encounter, buy more damage instead of another defensive effect.

Chapter Select and Foil Bosses

Chapter Select becomes available as Act 2 progresses. Replaying a completed chapter can produce a Foil version of its boss, which is considerably harder but offers Folium. A practical Booster Pack Heroes chapter guide move is to wait until you can clear the normal boss comfortably before chasing a Foil replay. Chapter 4’s Foil Apogre has 2,500 HP and a 4 Folium reward; earlier attempts can still fail after you reach Chapter 5.

Chapter Select also only advances monster-specific quests for the selected chapter. If an unfinished quest is not moving, check which enemy it requires and return to the chapter that contains that monster.

Chapters 6 and 7: Convert Income into Power

By Chapters 6 and 7, you may earn large amounts of Mastery without defeating the boss. That does not mean your build has enough damage. If you leave the boss nearly untouched, stop buying resource-generation nodes and purchase direct damage or attack speed. If the boss loses most of its health but survives the final exchange, one more damage or durability upgrade may be enough.

Chapter 7’s Iron Legion encounter is the last major obstacle of Act 2. After you defeat it, return to the Gate to the Stars and choose Begin Act Three.

Act 3 Chapter Guide: Rifts, Prestige, and the Final Boss

The final section of this Booster Pack Heroes chapter guide covers the longest stretch. Act 3 adds chapter modifiers, Nature Packs, and four Rifts. Each Rift changes the rules enough that raw damage alone will not solve it.

Use this Booster Pack Heroes chapter guide table to plan each Rift before you enter.

Nature, Death, and Frost Rifts

Chapter 8 introduces Nature Packs and the Rift to the Plane of Nature. If Rift Invasion is active, do not keep pouring damage into invulnerable monsters. Enter the Nature Rift, complete its objective, and stop the invasion. The Bushes modifier turns your cursor from an attacker into a healer, so your heroes must carry the damage.

Chapter 10 leads into the Plane of Death. Start with enough defenders to survive the early waves because Blood Chalice sacrifices one hero from every third pack opened. If the sacrifices leave your army too weak to reach the boss, use Soul Collector and Death-specific upgrades before trying again.

Chapter 12 introduces the Plane of Frost. Purchased packs and boxes can arrive trapped in Ice Cubes, so break the ice before trying to open them. Heroes freeze after accumulating three Frostbite stacks. If the army reaches the boss but cannot finish it, use Ice Breaker and the available Frost defenses.

Prestige Checks and the Plane of Chaos

Act 3 later progression includes higher-Prestige chapter battles. Completing Chapter 4 on Prestige 2 is required before advancing through the final gate toward Chaos. Prestige 1 and Prestige 2 versions of a chapter have separate completion requirements, so inspect the selected level before every battle.

Once the final Rift becomes available, enter the Rift to the Plane of Chaos. Chaos introduces random pack transformations, changing monsters, and Momentum. The final encounter is against Null the Undefined. Keep your army dealing damage as the boss changes form, and use Cosmic summons and temporary offensive effects to finish the fight.

Null the Undefined and the Ending

Defeating Null completes Chapter 15 and the Plane of Chaos, awarding The First Fracture. Return to the Gate to the Stars and select Complete this act. The confirmation explains that your progress will be preserved, so you can return later with your current progress intact.

Confirm the choice to see Act Three Complete and The End. The main story does not require every Foil monster, Relic, or Collection entry. You can keep playing afterward for remaining collection goals and higher-Prestige achievements.

Booster Pack Heroes Chapter Guide FAQ

What is the fastest early route in this Booster Pack Heroes chapter guide?

Buy Tower HP after the opening defeat, buy a Basic Pack, open it immediately, and finish the quest to open 2 Basic Packs for +1 income. That gives your next runs enough staying power to earn useful rewards.

Do I lose Folium when Act 2 starts?

No. Act 2 resets the skill tree, but Folium upgrades, your unspent Folium balance, and Collection entries are preserved. You do not need to spend every unit of Folium before entering the gate.

Why are my monster quests not progressing in Chapter Select?

Chapter Select only advances monster-specific quests for the selected chapter. A replay can still award resources while leaving a quest counter unchanged if you are fighting in the wrong chapter. Return to the chapter that contains the required monster.

Is Aegis Ward worth 75,000 Mastery?

It is worth considering when fast enemies and invisible attackers reach the tower before your defenders can stop them. The shield absorbs part of the opening damage, and the Shockwave that triggers when it breaks can rescue a collapsing defense. If your shield already holds until the boss, spend the next Mastery on damage instead.