he's easy to farm just solo him and put in these commands
ai_reaction_delay_idle 0
ai_reaction_delay_alert 0
player_monster_damage_base_constant 60000
plr_move_speed_sprint 1000
cc_set_sub_weapon javelin_lvl2 999
monster_player_damage_base_constant -80 <-- godmode
(execute this part while in tunnel scene):
ai_reaction_delay_idle 99999
ai_reaction_delay_alert 99999
player_monster_damage_base_constant 600
cc_change_figure_height 0.1
Spam spears at face for breakoff.