The two handed version falls under the spear skill. I think that one-handed true spears aren't possible without script work, as there's no option for that in the Construction Kit.
There is a slight problem. both ordinator NPC classes really aren't skilled with spears. They completely lack spear as a major or minor skill. I know this came from the Ordinator concept art but in the game they only use Blunt and Long blade weapon skills.
7 comments