10,000 XP · 100 Coins
Returned Tarcores are excluded because the current amount is not stated.
Upgrade and forge
How to Upgrade Tarstones in Mortal Shell 2
Enter your current level and resources to calculate XP, Coins, Tarcores, and remaining shortfalls.
Returned Tarcores are not included. The current returned amount is not stated, so the calculator leaves it out instead of treating it as zero.
Ready for a bounded calculation
Default example: Level 1 → 3, 2,500 current XP, 40 Coins and 2 Tarcores owned.
Local backup
How to plan the upgrade
- Equip a Tarstone and earn XP.
- Review the Level 1–3 requirements shown on this page.
- Enter current level, current bar XP, and owned resources.
- Review required resources, owned amounts, and shortfalls.
- Check the final cost and any returned materials in the current confirmation screen.
Level 1–3 requirements
20,000 XP · 6 Tarcores
The reported 150 Coin cost is an optional single-source override and starts off.
Tarforge parts
Etching Needles
Unlock Tarstone Temper
Muradean Actuator
Unlock weapon enhancement
Obsidian Lathe
Unlock sidearm enhancement
Foundry Stone
Unlock smelt/refund workflow
Current exact refund values are not preset.
Endless Core
Remove the enhancement cap
+20 is a single-source lead and is not calculated or promised.
Questions
What does the Tarstone calculator cover?
The preset covers Level 1 through Level 3. It shows XP to earn, resource costs, owned amounts, shortfalls, steps, and sources.
Why is the reported 150 Coin cost turned off?
It comes from one editorial source, so it is available as an optional override rather than part of the default total.
Why are returned Tarcores not subtracted?
The post-Week-1 returned amount is not stated. The calculator excludes it and does not treat it as zero.
Can I calculate weapon or sidearm upgrades?
Yes, with your own consecutive transition rows. Missing rows return an incomplete result; the tool does not fill gaps.
Sources
Cold Symmetry & Playstack — The Week 1 Update is Available Now
Published: 2026-08-29T15:48:00Z
Glimpses and Tarcores are no longer finite; Tarstone break returns changed and return more Tarcores; Merrick and Collector supply/restock direction; Fragile Tarstones break
Open sourceGameSpot — How To Upgrade The Tarforge In Mortal Shell 2
Published: 2026-08-17
Tarforge parts and functions; equipped Tarstones earn XP; Tarstone level workflow
Open sourceGAMES.GG — Mortal Shell 2 Tarforge guide
Published: 2026-08-18
Tarforge parts and functions; equipped Tarstones earn XP; Tarstone level workflow
Source locator available; canonical link pending review.
GamingBolt — Mortal Shell 2 Tarstones and Tarcores guide
Published: 2026-08-21
Tarstone XP bars; Tarcore cost; 150 Coin candidate claim; Tarforge part functions
Source locator available; canonical link pending review.
GamesRadar+ — The best Mortal Shell 2 Tarstones and their locations
Published: date not retained
Tarstone upgrade workflow; level requirements corroboration
Open source