Splitnir

Split your enemies' hearts in two.
Overview
Splitnir is a forge-crafted weapon that becomes available once the player has obtained bronze and sturdy wood. It is a high-damage piercing weapon with a progression of upgrades that steadily increase both its damage and durability, making it a strong late-early to mid-game option for enemies vulnerable to pierce damage.
At quality 1, Splitnir deals 135 pierce and has 100 durability. Each upgrade increases its durability by 50 and its pierce damage by 6, reaching 153 pierce and 250 durability at quality 4. Its upgrade materials are centered around 



- Quality 1: 135 pierce, 100 durability; 10 Ashwood, 6 Flametal, 2
Asksvin hide, 3
Bonemaw tooth
- Quality 2: 141 pierce, 150 durability; 5 Ashwood, 6 Flametal, 1 Asksvin hide, 3 Bonemaw tooth
- Quality 3: 147 pierce, 200 durability; 10 Ashwood, 12 Flametal, 2 Asksvin hide, 6 Bonemaw tooth
- Quality 4: 153 pierce, 250 durability; 15 Ashwood, 18 Flametal, 3 Asksvin hide, 9 Bonemaw tooth
Because Splitnir uses piercing damage, it is most effective against targets that are weak to that damage type. Its durability upgrades also make it more forgiving for extended fights, especially once higher-tier materials are available for reinforcement.
Official description
Split your enemies' hearts in two.