Equipment guide · Reviewed 5 September 2026
Mortal Shell 2 uses five smithing materials to enhance primary weapons and sidearms at the Tarforge: Ventrium, Laterite, Dorsalite, Thoracium and Ossinite. Each covers five levels of the standard enhancement ladder.
Each row shows one five-level tier. The material quantities are the cost of each individual upgrade, not cumulative totals.
| Material | Enhancement levels | Material cost per level | Tier total | Tier Coin cost |
|---|---|---|---|---|
 Ventrium | +1 to +5 | 1 / 3 / 6 / 9 / 12 | 31 | 3,150 |
 Laterite | +6 to +10 | 1 / 3 / 6 / 9 / 12 | 31 | 17,500 |
 Dorsalite | +11 to +15 | 1 / 3 / 6 / 9 / 12 | 31 | 36,250 |
 Thoracium | +16 to +20 | 1 / 3 / 6 / 9 / 12 | 31 | 55,000 |
 Ossinite | +21 to +25 | 1 / 3 / 6 / 9 / 12 | 31 | 73,750 |
Cost reference: the linked material names open their Mortal Shell Database entries, an independent community database. Confirm the current price in your live Tarforge menu if your game version differs.
| Resulting level | Material | Quantity for this level | Coin for this level |
|---|---|---|---|
| +1 | Ventrium | 1 | 100 |
| +2 | Ventrium | 3 | 300 |
| +3 | Ventrium | 6 | 500 |
| +4 | Ventrium | 9 | 1,000 |
| +5 | Ventrium | 12 | 1,250 |
| +6 | Laterite | 1 | 2,000 |
| +7 | Laterite | 3 | 2,750 |
| +8 | Laterite | 6 | 3,500 |
| +9 | Laterite | 9 | 4,250 |
| +10 | Laterite | 12 | 5,000 |
| +11 | Dorsalite | 1 | 5,750 |
| +12 | Dorsalite | 3 | 6,500 |
| +13 | Dorsalite | 6 | 7,250 |
| +14 | Dorsalite | 9 | 8,000 |
| +15 | Dorsalite | 12 | 8,750 |
| +16 | Thoracium | 1 | 9,500 |
| +17 | Thoracium | 3 | 10,250 |
| +18 | Thoracium | 6 | 11,000 |
| +19 | Thoracium | 9 | 11,750 |
| +20 | Thoracium | 12 | 12,500 |
| +21 | Ossinite | 1 | 13,250 |
| +22 | Ossinite | 3 | 14,000 |
| +23 | Ossinite | 6 | 14,750 |
| +24 | Ossinite | 9 | 15,500 |
| +25 | Ossinite | 12 | 16,250 |
Use fixed pickups and finite vendor stock to finish a tier. The Merchant material shelf opens once you hold at least 16 Ova; shop availability still depends on your route and current game state.
| Material | Fixed map records¹ | Verified vendor stock² |
|---|---|---|
| Ventrium | 105 | Merchant ×15 at 250 Coin each |
| Laterite | 111 | Merchant ×10; Brigand ×3 at 650 Coin each |
| Dorsalite | 68 | Merchant ×5; Brigand ×1 at 1,200 Coin each |
| Thoracium | 9 | Merchant ×3; The Collector ×2 at 2,500 Coin each |
| Ossinite | 4 | No vendor stock verified |
¹ Fixed record counts from Probonk’s Mortal Shell 2 map, checked 5 September 2026. These are records in that map dataset, not a guaranteed per-playthrough limit.
² Vendor prices and stock were checked against the individual Ventrium, Laterite, Dorsalite, Thoracium and Ossinite database entries. Brigand stock is labelled “Steal Items”; do not treat it as an ordinary shop purchase.
Ventrium and Dorsalite can also appear in specific Surprise Eggs. Patch changes and one-off rewards mean the map-record count alone cannot prove the total supply. No reliable Ossinite vendor stock is listed in the checked references.
View material locations on our map →Our Upgrade Materials map layer is still being expanded.
The Tarforge is in Marrow Keep. Give the first four tools to Franz; install the Endless Core through the Tarforge menu. The route summaries below were cross-checked against two independent location guides and the item database.
Primary weapons · Prologue
Inside the Village Outskirts Beacon cleanse dungeon in Disciple’s Path. Open the chest before the elevator section, then bring the Actuator to Franz to enable primary-weapon enhancement. If you skip the Prologue, the item database says you begin with one.
Item reference →Sidearms · Fainweald
From Widow’s Overlook, travel southeast to Martyr’s Tomb. Clear the dungeon to its final room and open the priest-guarded chest beside the sarcophagus. Bring the Lathe to Franz to enable sidearm enhancement.
Item reference →Tarstones · Glutted Mire
From Sunken Village, continue through the Glutted Mire beyond the Tarblighted Shepherd. Cross the wooden route toward Ruk; the chest below him, before the Magdalena encounter, contains the Needles. Give them to Franz to unlock Tarstone tempering.
Item reference →Smelting · Mammon
Start at Outskirts of Mammon Beacon and head south down the battlefield toward the castle-wall fortifications. Open the chest near the enemies by the wall, then return the Stone to Franz to unlock equipment smelting.
Item reference →Level cap · The Unfound Path
Enter the Hidden Nave Beacon cleanse dungeon. Reach the second bonfire, double back for the torch at the first bonfire, then carry it into the fog and follow the revealed route to the chest at the bottom. Install the Core at the Tarforge to remove the weapon and sidearm level cap.
Item reference →The five routes were cross-checked on 5 September 2026 against AllThings.How and Gamerpillar. Exact route wording here is original and condensed for navigation.
The Foundry Stone unlocks equipment smelting, which recovers smithing materials from enhanced weapons and sidearms. Do not assume it refunds Coin or confuse it with Tarstone tempering.
Upgrade costs, tier boundaries, item functions and vendor snapshots are patch-sensitive. This guide was checked on 5 September 2026 against the in-game-text database entries linked above, independent Tarforge location guides and the mapped pickup dataset. If a later patch changes a cost, trust the current Tarforge menu and send us the changed level.