Game guide

Skill Based Boss Fights Guide: Before you start

[ETERNITY] Skill Based Boss Fights

Chronicles of the Darkheart, Playing 77, Rating 76.5%

Creator Chronicles of the Darkheart

Playing 77

Rating 76.5%

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About

Overview

Skill Based Boss Fights is an action game where you fight a lineup of unique bosses, unlock new classes by defeating them, and sharpen your technique with every attempt. This guide covers how to get started, how controls work, how classes are earned, and what to push for once you have the basics down.

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What is on this page

Contents

01 Before you start — two things to check Check 02 Core controls Summary 03 Live and upcoming events Events 04 Starting out — the tutorial boss Linked Step 05 How classes are unlocked Table 06 Advanced goals — Boss Rush and challenge badges Tips 07 Glossary Words 08 Common questions FAQ

Before you start — two things to check

Check

In short Getting your setup right before your first fight saves a lot of frustration.

The game warns up front that it is hard for new players and is not meant for mobile. Sorting these two things out before you load in makes the whole experience smoother.

Play on PC the game is not recommended to be played on a mobile device.
If flashing lights bother you, open the settings and turn on Reduce Screen Flash before entering any fight.
Check that your keybindings feel natural every hotkey can be changed in settings.

Ask on the board

Core controls

Summary

In short Four keys cover almost everything you will do in a fight.

The control scheme is tight. Most of the time you are working with just a handful of keys, and the game lets you remap all of them if the defaults do not suit you.

Z and X　your main abilities for every class.
Q　dash in the direction you are walking.
C and V　extra abilities that become available on higher-tier classes.
Settings　all of the above can be rebound to whatever layout works for you.

03 Live and upcoming events Events

Events running now or coming soon. They have fixed dates, so check them first.

Upcoming Mar 2 – Mar 4

1st Chair + [SANCTUARY]

Win [Date TBD]

Upcoming Dec 31 – Dec 31

Apex Carnellio

Hardest [fair] boss [All precursor bosses need to be added before this]

See the whole schedule

Starting out — the tutorial boss Linked

Step

In short Defeating Linked is the official starting point of the game.

Linked is the tutorial trainer, and beating him earns the Worthy Apprentice badge.

Linked is the tutorial boss designed specifically to ease you in.
Defeating Linked earns Worthy Apprentice and marks your journey as officially begun.

How classes are unlocked

Table

In short Every boss you beat hands you a new class, so each fight is also progress toward a wider set of abilities.

Defeat the boss listed and the class on the right becomes available to you.

Boss	Class unlocked
Pink Percolation boss	BUBBLE
Igknight	EMBER
Brickbattler	BRICK
Stravant	THUNDER
Venom boss	HAZE
Radiance	RADIANT
Sagis	GLACIER
Disastyr	WICKED
Hyperbole	HYPERION
Cazar	NOBLE
Aeroxis	DANCER
Dark Crusader	GLADIATOR
Carnellio	DRACONIC
Nargalis	VORTEX
Infinite Power boss	SENTRY
Cazar, Fallen Warrior	ELEMENTAL

Advanced goals — Boss Rush and challenge badges

Tips

In short Clearing the Boss Rush and hunting challenge badges are the main targets once you have worked through the standard boss roster.

Beyond the individual bosses, two major goals exist for players who want to push further. Both reward badges that cannot be earned any other way.

Tips worth knowing

Completing the Boss Rush earns the Champion badge.
Challenge: Carnellio's RNG awards a badge with a 1-in-1,000,000 chance condition and does not grant the standard Draconic class unlock.
Challenge: Carnellio Alt Combos is a separate challenge badge also tied to Carnellio and also does not grant Draconic.
Defeating Cazar a second time as the Fallen Warrior variant earns Eternal Destruction and the ELEMENTAL class.

Glossary

Class: A set of abilities unlocked by defeating a specific boss; different classes give you different Z, X, C, and V moves.
Tier: The level of a class — higher tiers add C and V abilities on top of the standard Z and X.
Dash: A quick movement triggered by pressing Q while walking.
Boss Rush: A mode where you fight multiple bosses in sequence; finishing it earns the Champion badge.

Common questions

FAQ

Can I play this on my phone?

The game itself warns that mobile is not recommended. Play on PC if you can.

How do I get new classes?

Beat a boss and the class tied to that boss unlocks. Each boss in the roster gives a different class.

Does beating Carnellio in the RNG challenge give me the Draconic class?

No. Both Carnellio challenge badges explicitly do not grant Draconic.

The lights are hurting my eyes — what do I do?

Open the game settings and enable Reduce Screen Flash. The game contains flashing lights and includes this option specifically to reduce them.

Updated Oct 26, 2026
Game updates can change what is on this page. If you spot something, get in touch and let us know.

[ETERNITY] Skill Based Boss Fights Chronicles of the Darkheart, Playing 77, Rating 76.5%

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