SET Lv.17
Sulfossil Armor Set: Stats, Set Bonus & How to Get硫黄化石装備セット
The Sulfossil Armor Set is a level 17 armor set in Core Keeper made of 3 pieces: Sulfossil Helmet, Sulfossil Cuirass, Sulfossil Boots. Set bonus: 2 pieces – +25% explosion damage; 3 pieces – Deals 74 damage to all nearby enemies when taking damage. Best for summoner builds, ranking #52 of 70 sets for damage.
Sulfossil Armor Set pieces and stats (Lv.20)
The Sulfossil Armor Set has 3 pieces. Values are for Lv.20 (fully upgraded); the level column shows the level each piece starts at.
| Slot | Item | Base Lv | Armor | Max health | Effects (Lv.20) |
|---|---|---|---|---|---|
| Head |  Sulfossil Helmet |
18 | 25 | +46 |
|
| Chest |  Sulfossil Cuirass |
18 | 34 | +63 |
|
| Legs |  Sulfossil Boots |
18 | 34 | +60 |
|
Sulfossil set bonus: how many pieces do you need?
Wearing the required number of pieces from the same set at once adds an extra effect (the set bonus). The Sulfossil Armor Set gives:
- 2 pieces: +25% explosion damage
- 3 pieces: Deals 74 damage to all nearby enemies when taking damage
Sulfossil Armor Set total stats
Totals with every piece equipped, including the set bonus.
| Effect | Base level | Lv.20 |
|---|---|---|
| Max health | +153 max health | +169 max health |
| Armor | +84 armor | +93 armor |
| Explosion damage | +56% explosion damage | +59% explosion damage |
| Explosion radius | +25% explosion radius | +27% explosion radius |
| Deals damage to all nearby enemies when taking damage | Deals 74 damage to all nearby enemies when taking damage | Deals 74 damage to all nearby enemies when taking damage |
Is the Sulfossil Armor Set good? Rating by build
For each build we take the strongest loadout (gear and food), swap in the Sulfossil Armor Set pieces (with the set bonus) and calculate the damage. Damage is relative to the strongest loadout (= 100), and the rank is out of all 70 sets.
| Build | Damage (best = 100) | Rank | Best set for this build |
|---|---|---|---|
| Melee | 55.9 | #58 | Core Commander Armor Set |
| Ranged | 57.6 | #56 | Mold Set |
| Magic | 38.1 | #58 | Arcane Monk Armor Set |
| Summoner | 41.4 | #52 | Chieftain Armor Set |
The Sulfossil Armor Set fits summoner builds best (#52 of all sets). Its level holds up in the late game.
Damage assumes endgame gear (Lv.20) and skills at level 100. Defense (armor, health) is not included; compare the totals above for that. The damage model is this site's own estimate, not an official formula.
How to get the Sulfossil Armor Set (drops, chests)
How to get Sulfossil Helmet
- Boss drop: Urschleim – 56.4% per try
Sulfossil Helmet: all sources and drop chances →
How to get Sulfossil Cuirass
- Boss drop: Urschleim – 56.4% per try
Sulfossil Cuirass: all sources and drop chances →
How to get Sulfossil Boots
- Boss drop: Urschleim – 56.4% per try
Sulfossil Armor Set upgrade cost (to Lv.20) and reinforcement
Each piece can be upgraded to Lv.20 at the Upgrade Station with Ancient Coins and materials. Reinforcing at the Salvage and Repair Station doubles durability and raises effect values by about 15%.
| Item | Upgrade cost Lv.17→20 | Reinforcement materials | Durability |
|---|---|---|---|
| Sulfossil Helmet |
 Ancient Coin×1,044  Pandorium Bar×38  Relucite Bar×41  Corrupted Alloy×20 |
Pandorium Bar×1–5 |
90 |
| Sulfossil Cuirass |
Ancient Coin×1,044 Pandorium Bar×38 Relucite Bar×41 Corrupted Alloy×20 |
Pandorium Bar×1–10 |
100 |
| Sulfossil Boots |
Ancient Coin×1,044 Pandorium Bar×38 Relucite Bar×41 Corrupted Alloy×20 |
Pandorium Bar×1–7 |
95 |
| All pieces | Ancient Coin×3,132 Pandorium Bar×114 Relucite Bar×123 Corrupted Alloy×60 | ||
Sets of a similar level to compare
| Set | Lv | Set bonus | Best build |
|---|---|---|---|
| Cosmos Armor Set | 16 | 2 pcs: Immune to burning | Ranged (#35) |
| Core Commander Armor Set | 17 | 2 pcs: +25% damage dealt by you and all nearby allies / 3 pcs: All nearby enemies take 67 radioactive damage every other sec | Melee (#1) |
| Hydra Bone Armor Set | 17 | 2 pcs: +20% chance on melee hit to increase range damage by 30% | Melee (#30) |
| Inventor Armor Set | 17 | 3 pcs: Your explosions apply oil on the ground | Summoner (#57) |
| Arcane Monk Armor Set | 17 | 3 pcs: +30% mana regeneration while casting | Magic (#1) |
| Pandorium Armor Set | 17 | 3 pcs: +80% melee damage while not having taken any direct damage for a while / 3 pcs: +14.3% movement speed | Melee (#34) |
Sulfossil Armor Set FAQ
Q. Where do I get the Sulfossil Armor Set?
Sulfossil Helmet: Urschleim (boss drop). Sulfossil Cuirass: Urschleim (boss drop). Sulfossil Boots: Urschleim (boss drop). Details are in How to get.
Q. How many pieces do I need for the Sulfossil set bonus?
2 pieces give "+25% explosion damage". 3 pieces give "Deals 74 damage to all nearby enemies when taking damage" (3 pieces in total).
Q. Which build is the Sulfossil Armor Set best for?
It fits summoner builds best (#52 of all sets). See the rating by build for the numbers.
Q. How much does it cost to upgrade the Sulfossil Armor Set to Lv.20?
Upgrading every piece from Lv.17 to Lv.20 takes 3,132 Ancient Coins in total, plus materials (upgrade cost).
Unless a note on the page says otherwise, numbers are read from the game files of Core Keeper 1.3.0.6 (prefabs, configuration files, drop tables and the game's program) and calculated by this site, including upgraded (per-level) values, sell prices and mana costs. Names and descriptions are the game's official English text. Only reinforcing materials, minion and pet attacks and some food values are based on the Core Keeper Wiki (Fandom) data (CC BY-SA 3.0). Core Keeper and its images are © Pugstorm. This is an unofficial fan site.