Colossus Boss Guide - How to Beat and Get High Score

The Great Rift Colossus guide for Chaos Zero Nightmare (CZN). See how to defeat Colossus, Vanguard & Rearguard boss fights, best teams, character save data, and battle tips in CZN.

Vanguard Team Guide

Boss Information

In the Vanguard Team phase, you will face the Colossus. The Colossus has two arms and a head. You can only attack its head after destroying both arms, and the number of attacks or turns you have to attack the head is limited.

Colossus (Main Body)

At the start of the turn, the Colossus's main body applies a count to both arms that decreases with each hit. It also has Elasticity, so characters with many hits are at a disadvantage.

Colossus's Right Arm

When the right arm is attacked, its Dark's Legacy decreases. With each decrease, the left arm gains Fury. Removing all stacks causes the Colossus to apply a debuff.

Colossus's Left Arm

When the left arm is attacked, its Light's Legacy decreases. With each decrease, the right arm gains Commitment. Removing all stacks causes the Colossus to attack immediately.

Recommended Vanguard Team Comp

Characters for the Team
Haru	Narja	Nia
Partner
Priscilla	Gaya	Nyx

This team comp is built around using Haru's Anchor Shot multiple times. Its high single-hit damage makes it a good match for the Colossus battle.

Haru

*0 Transcendence, all Potential unlocked

Save Data

Save Data

The Anchor Pointer mainly uses the Hidden Epiphany to apply Vulnerable, but even with a normal Epiphany, any option that doesn't grant Retain or Retrieve to Anchor Shot is a good choice.

Equipment

Equipment	Skill/Refinement Effect/God's Hammer
Foggy Crystal Ball	Increases the damage of 0-Cost Attack Cards by 40%. When you draw one of your own cards with a skill, that card's damage is increased by 50% for 1 turn. When using an Attack card, there is a 5% chance to add 1 additional hit.
Gluttonous Tailcoat	At the start of the next turn after taking damage, gain 80% Fixed Shield. When using an Attack Card on a Vulnerable enemy, Crit chance +15%.
Flower of Dead Souls	Each turn, starting from the second Attack Card played, damage is increased by 20%. At the start of combat, if you have 18 or fewer Cards, the damage of Attack Cards is increased by 30%.

This Save Data for Haru was created in the City of Mist (Codex), which has compatible equipment. Foggy Crystal Ball also applies to Anchor Shot when its Cost becomes 0 due to Narja's cards, making it a high-priority piece of equipment for this team.

Memory Fragments

For Memory Fragments, we've used Crit chance for IV, Elemental Damage for V, and ATK for VI. Prioritize Crit chance, Crit Damage, and ATK for your sub-stats.

Detailed Status

Haru has a Potential that increases Anchor Shot damage by +10% if her ATK exceeds 1000. However, the requirement is high, so focusing on Crit-related stats is also a good option.

Narja

*0 Transcendence, all Potential unlocked

Save Data

Save Data

In the data above, we are copying cost-reducing cards while thinning the deck. Spore Harvester is a useful option as it increases damage and can be used as a Search resource in a pinch.

Equipment

Equipment	Skill/Refinement Effect/God's Hammer
Pale Eternal Flame	When a card is Exhausted, increase ally damage by 10% for 1 turn (once per turn). When ending the turn with 1 or more AP, apply Vulnerable 1 to all enemies. Damage +20%, Shield Gained +20%
Vinelord's Mask	When drawing an Exhaust Card with an ally's skill, gain 80% Fixed Shield (twice per turn). At the start of the turn, if there is an Exhaust Card in the deck, 30% chance to draw 1 Exhaust Card.
Dormant Seed	When gaining Shield, gain 100% Fixed Shield (once per turn). Shield Gained +15%, Heal Amount +15%

Since Narja's main role is Cost reduction, you can clear without extensive min-maxing, but further optimization will increase consistency. Prioritize equipping items with effects that activate automatically.

Memory Fragments

For Memory Fragments, we've used HP for IV, HP for V, and DEF for VI. If you are using Spore Harvester, it is recommended to equip the Glory's Reign to boost damage.

Detailed Status

Nia

*6 Transcendence, Potential unlocked to 7

Save Data

Save Data

Nia is built with only Search Cards, with the goal of drawing Bottomless Hunger and Anchor Pointer into your hand.

Equipment

Equipment	Skill/Refinement Effect/God's Hammer
Tentacles of Chaos	Ally ATK +8% On kill, reduce Stress of the Combatant with the highest Stress by 2. When ending the turn with 1 or more AP, apply Vulnerable 1 to all enemies. When taking damage, apply Agony 4 to the attacker.
Psionic Combat Armor	When a Card is Exhausted, gain 30% Fixed Shield (5 times per turn). At the start of the turn, if there is an Exhaust Card in the deck, 30% chance to draw 1 Exhaust Card.
Nature's Gift	At the end of the turn, Heal for 40%.

This build equips a weapon that drops from Senectus to indirectly support Haru. Min-maxing other equipment slots will make the run even easier.

Memory Fragments

For Memory Fragments, we've used HP for IV, HP for V, and DEF for VI.

Detailed Status

Strategy

Rearguard Team Guide

Boss Information

The Colossus also appears in the second half of the fight. In this phase, the window for attacking the Colossus's main body is limited, and the arms revive after just one hit.

Colossus (Main Body)

In the second half, an effect is added that increases the Cost of the highest-Cost card by 1, and another that grants Morale based on the number of Forced Suppression.

Colossus's Right Arm

When attacked, it gains Fortitude and Nighttime Karma, and buffs the left arm with Fury. Nighttime Karma has an effect where, upon gaining 3 stacks, the Colossus will perform a debuff action.

Colossus's Left Arm

When attacked, it gains Fortitude and Daytime Karma, and buffs the right arm with Commitment. Daytime Karma has an effect where, upon gaining 3 stacks, the Colossus will immediately perform an attack action.

Colossus Battle Tips

Focus on the Amplification Effect

In The Great Rift, there is an amplification effect that grants a 50% damage increase for Instinct and Order Cards, and a 20% damage increase for Exhaust Cards. If you have suitable characters, use them to clear more efficiently.

Use High Single-Hit Damage Dealers

The Colossus and both of its arms have mechanics that limit the number of hits they take from an attack. Prioritize using characters with high single-hit damage to gain an advantage in battle.

Be Aware of the Arms' Traits

The arms have a trait where attacking one will apply a buff to the other. Plan your strategy accordingly, such as defeating them simultaneously with an AoE Attack or taking out the left arm first, which creates a Contaminated Card.

Clear the Vanguard Phase in 5 Turns

Depending on the number of turns remaining in the first half, up to 5 turns will be added to the second half. To maximize your score, aim to clear the first half as quickly as possible.

How to Win Boss Fight

Play Manually

While auto-play is available in The Great Rift, it struggles to adapt to boss mechanics, leading to inefficient clears. Since maximizing your score is important in this content, it's recommended to play manually.

Create a Season Save Data

Only Save Data created in Season 2 can be used in The Great Rift. Farm Seasonal Chaos to create a Save Data that is well-suited for clearing The Great Rift.

Learn from Other Players' Data

In The Great Rift, you can check other players' team comps from the Merit Ranking. Reference the leaderboards to find team comps you can build with your characters and Save Data.

What Is The Great Rift?

High-Difficulty Score Attack Content

The Great Rift is a score attack event held within the Galactic Cataclysm. The damage you deal and other factors are added to your score, and you can earn rewards based on that score.

Score Acquisition Conditions

Two Parties Are Required

To clear The Great Rift, you need two parties: a Vanguard Team and a Rearguard Team. The scoring conditions are different for the Vanguard and Rearguard teams, so you need to prepare comps suited for their respective roles.

Three Types of Rewards

In The Great Rift, there are three types of rewards: Cumulative Score Rewards, Score Achievement Rewards, and Ranking Rewards. Even beginners can earn materials and other items by repeatedly participating.

Cumulative Score Rewards

Cumulative Score Rewards reset weekly. You can earn 270 Crystals and 4,000 exchange items for the Supply Shop, so be sure to participate every week and aim for a score of 500,000.

Score Achievement Rewards

With Score Achievement Rewards, you can get rewards based on the high score you achieve in a single run. You get all rewards by reaching a score of 500,000, but the main prize is a sticker, so aim for a high score that is within your reach.

Merit Ranking Rewards

Ranking Rewards are earned based on your rank determined by your high score at the end of The Great Rift. The main reward here is also a sticker, so make sure to participate in The Great Rift to secure your rewards.

Two Types of The Great Rift Event

The Great Rift is held twice, during a first half and a second half. In the week when the period changes, you can earn cumulative rewards for both, so don't forget to participate early.

The Great Rift Past Events

Forbidden Catalyst

Vanguard Team Guide

Boss Information

In the Vanguard Team phase, you will face Beginning of Desire. Beginning of Desire creates Substitute cards in your deck every turn.

Use Characters with Many Hits

Beginning of Desire has a damage reduction buff called Mucous Membrane. This buff decreases each time it's attacked, so use characters who can deal many hits, like Tressa, to remove it.

Add Draw Support for Consistency

The Substitute cards created by Beginning of Desire become 0-cost when drawn by an effect. Creating a Save Data with Divine Epiphanies or Common Cards that can draw will make for a more stable run.

Recommended Vanguard Team Comp

Mei Lin

Veronica

Nia

This is a team comp with Mei Lin as the Attacker. While supporting her with Veronica and Nia's draw skills, you'll fight using the multiple hits from Unity of Attack and Defense.

Strategy

1. Prepare Save Data for Veronica and Nia that is focused on draw.
2. Chip away at Mucous Membrane while cycling Mei Lin's Unity of Attack and Defense.
3. Deal massive damage with Rising Dragon Spire, which depends on the number of cards used.

Other Recommended Characters

Character	Reason for Recommendation
Tressa	- An Attacker with a Weak Attribute advantage - Easy to deal damage with 0-cost cards.
Hugo	- Can easily get many hits in - Has good synergy with Tressa
Rei	- Can Upgrade 1-Cost or lower Cards - Also has excellent draw support
Mika	- Excellent at gaining AP - You'll want to prepare a Save Data with plenty of draw.

Rearguard Team Guide

Boss Information

Beginning of Desire also appears in the second half. The Beginning of Desire in the second half creates "Counterfeit" cards in your deck every turn. Even after its HP is depleted, it is not defeated, and you can continue to deal damage to it.

Aim for the Ravage State

The Counterfeit cards created in the second half will have their Cost reduced when the enemy is in a Ravage state. Additionally, when Beginning of Desire is in a Ravage state, its damage reduction is removed, so it's recommended to aim for Ravage with an Instinct-type character.

Recommended Rearguard Team Comp

Sereniel

Cassius

Selena

For the Rearguard Team, a team comp with Sereniel as the Attacker is recommended. By using Selena's Tenacity recharge, you can trigger Ravage multiple times, further leveraging Sereniel's strengths.

Strategy

1. Have Selena's Tactical Maneuver with the Tenacity recharge Epiphany.
2. Inflict Ravage on the enemy and deal damage with Sereniel.
3. Use Selena's Tactical Maneuver to recharge Tenacity and repeat the Ravage cycle.
4. Cycle your deck using Cassius's Quest: Full House and Joker.

For the Rearguard Team, a team comp with Sereniel as the Attacker is recommended. By using Selena's Tenacity recharge, you can trigger Ravage multiple times, further leveraging Sereniel's strengths.

Strategy

1. Have Selena's Tactical Maneuver with the Tenacity recharge Epiphany.
2. Inflict Ravage on the enemy and deal damage with Sereniel.
3. Use Selena's Tactical Maneuver to recharge Tenacity and repeat the Ravage cycle.
4. Cycle your deck using Cassius's Quest: Full House and Joker.

Galactic Disaster Season 1: Forbidden Catalyst

Chaos Zero Nightmare Related Guides

Recommended Guides

Chaos Manifestation Guide	Main Story Walkthrough
Trauma Code Guide	Battle Pass Guide
Maintenance Updates	Growth Guide
Rescue Guide	Pity System Guide
Save Data Guide	How To Create Best Save Data

Chaos Guide

Blue Pot	Twin Star's Shadow Guide
City of Mist Guide	Zero System
Chaos Guide	Basin of Hyperspace Guide
Burning Life Guide	-

Galactic Disaster

Galactic Disaster Guide	Galactic News Network
S1 Forbidden Catalyst	S2 Seed of Karmic Fire

Database

Equipment List	Cards List
Fate List