Acrospear
The Acrospear was added in Update 5. The location of the NPC you'll need to talk to is behind the saber boss castle behind a easily visible wall that you can break.
In order to craft the Acrospear, you require the Acroscythe, 9 Acro Eyes and 1 Hydra Tail.
Once you talk to the NPC "??", He will talk to you about various things, and after progressing through his dialogue, it will pop up a menu, which allows you to craft 2 items, the Acro Eye, and The Acrospear.
To first craft the Acro Eyes, you need: 6 Aqua Gems, 50 Sea Artifacts, and 10 Sea King's Blood.
In total you need around 54 Aqua Gems (1350 Sea Artifacts, 540 corals, 54 pearls, and 540 shark fins), 450 more Sea Artifacts for the eyes, and 90 Sea King's Blood. And the aqua gems plus the acro eyes you would need In TOTAL 1800 sea artifacts, 54 pearls, 540 corals, 540 shark fins 90 sea king blood and 1 hydra tail.
Please inser description here
Acrogengefull is a move that strikes down a spear that steals a lot of blood from the enemy, heavily healing you.