Ethernalis Systems Reference

Perks

Every adventurer, who survives long enough grows specialised. Perks are how that growth takes permanent shape — passive abilities bought with experience and locked behind one another in branching chains.
- On the passive powers that narrow a character toward a purpose
54 Perks· XP Tree· Cost Scaling· Instant Bonuses
I
Spending What You Have Earned

How Perks Work

Ethernalis character perk screen
Perk Tree - Most advanced perks require unlocking through other perks.

The Experience Tree

Perks are bought with experience points. Each perk has a base cost, and most require at least one other perk to already be owned before they become available — forming a branching tree that pushes specialisation. You cannot skip to the expensive end of a chain without walking through what comes before it.

Some perks sit at the root of the tree with no prerequisite at all. These are available from the start of the run and define your initial direction. Others are buried several links deep, accessible only to a character who has committed meaningfully to a particular approach.

Cost Scaling

Every perk you already own makes the next one more expensive. For each perk already in your possession, a penalty equal to one tenth of the new perk's base cost is added to what you must pay. A character with many perks will find each additional unlock notably more expensive than the last.

This means early perks are cheap and easy to accumulate, but late-run unlocks carry the compounded weight of everything bought before them. A seeker who spread widely early may find focused late unlocks difficult to afford. One who focused narrowly may find their preferred next step surprisingly reachable.

Instant Stat Bonuses

Some perks do not just change how the game works — they permanently raise a base stat the moment they are unlocked. Thick Skinned adds 1 to base defense; Stone Skinned adds 3 more. Scholar adds 10 to maximum mana. Witch increases mana regeneration. Enduring increases stamina regeneration. Pack Mule expands carry weight by 100. Good Metabolism extends the hunger interval. Retainer extends the thirst interval. These bonuses are applied once, on unlock, and do not require any further condition.

Passive Gating

Perks gate more than stat bonuses. Certain event options in the world are locked behind specific perks and cannot be selected without them — the option simply does not appear. Recipes in the crafting system are similarly gated: some preparations require a specific perk to attempt. This means your perk choices quietly shape which parts of the world are accessible to your particular character.

No Removal

Perks, once unlocked, are permanent for the run. There is no way to refund a perk or reclaim the XP spent on it. Choosing a perk is a long-term commitment, and a branch of the tree entered early tends to pull subsequent choices toward its own continuation. Plan accordingly, or embrace where the tree takes you.


II
Every Passive Ability

Perk Reference

All 54 perks listed by tree group. The cost shown is the perk's base XP cost before scaling. A "requires" badge indicates the perk that must be owned first.

Melee Combat

The Fighter's Path

Sword Master

Sword Master

150 XPVeteranEnables 0 recipes

+1 damage and +10% melee with short and long blade weapons.

Critical Strikes & Stealth

The Unseen Blow

Archery & Ranged

The Marksman's Tree

Archer

Archer

100 XPHunterEnables 0 recipes

25% chance to recover a projectile after firing.

Point Blank Shot

Point Blank Shot

250 XPArcherEnables 0 recipes

Can perform ranged attacks at melee distance.

Bullseye

Bullseye

500 XPSharpshooterEnables 0 recipes

+10% ranged damage with all projectiles.

Leatherworking

Leatherworking

You know your way around the production of leather goods.

Defence & Recovery

The Hardened Body

Thick Skinned

Thick Skinned

100 XPQuick HealerEnables 0 recipes

+1 base defense (applied on unlock).

Stone Skinned

Stone Skinned

500 XPThick SkinnedEnables 0 recipes

+3 base defense (applied on unlock).

Spellcraft

The Caster's Art

Caster

Caster

10% chance not to consume a scroll when casting from it.

Warlock

Warlock

50% reduction in spellcraft penalty imposed by wearing weapons and armour.

Bookworm

Bookworm

500 XPScholarEnables 0 recipes

1% chance that any scroll found becomes a book or tome instead.

Durability & Smithing

The Careful Hand

Maintainer

Maintainer

10% chance not to lose weapon or armour durability during use.

Blacksmith

Blacksmith

100 XPMaintainerEnables 1 recipe

20% chance not to lose weapon or armour durability during use.

Surgeon

Surgeon

500 XPBlacksmithEnables 0 recipes

50% chance not to lose weapon durability when attacking.

Ethosian Artisanship

Ethosian Artisanship

200 XPBlacksmithEnables 5 recipes

You know the secrets of elven craftsmanship and can forge steel.

Crafting

The Maker's Gift

Artisan

Artisan

100 XPTinkererEnables 1 recipe

+1 to the quality of all crafted items.

Carpenter

Carpenter

10% chance not to consume wood, sticks, or planks when crafting.

Mining & Excavation

Below the Stone

Prospector

Prospector

+5% chance to recover a gem while excavating.

Survival & Carry

Endurance of the Road

Enduring

Enduring

100 XPRunnerEnables 0 recipes

+1 stamina regeneration (applied on unlock).

Quick Dresser

Quick Dresser

100 XPPack MuleEnables 0 recipes

Equip items directly from the ground or from a container without transferring first.

Looter

Looter

500 XPOrganisedEnables 0 recipes

Opening containers does not cost an action point.

Sustenance

Hunger & Thirst

Good Metabolism

Good Metabolism

100 XPFoodieEnables 0 recipes

+1 hunger interval — hunger accumulates more slowly (applied on unlock).

Consumer

Consumer

500 XPGood MetabolismEnables 0 recipes

Can eat inedible items. 10% of the item's remaining durability converts to hunger reduction.

Retainer

Retainer

100 XPFoodieEnables 0 recipes

+1 thirst interval — thirst accumulates more slowly (applied on unlock).

Temperature

Hot and Cold

Frosty

Frosty

100 XPCold HardenedEnables 0 recipes

Significantly better tolerance to cold.

Animal Handling

The Wild Caught

Tamer

Tamer

200 XPRat CatcherEnables 0 recipes

Caught animals are no longer treated as enemies.

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