All-In is a special weapon skill from using 2-handed weapons and it does not deal the damage it meant to be.
Some testing:
• 2 AP normal attack: 74 (1st attempt) and 93 damage (2nd attempt)
• Double that: 148 (1st) and 186 (2nd)
• 3 AP All-In: 85 (1st) and 105 (2nd) when it should be around 111~140.
Simply fixing the damage would work but i do have another idea in mind:
Pommel Strike (2AP) with 3 turns cooldown, causing Dizzy which -20% accuracy so the potential of missing the attack is still there but not as serve as Blind status.
• Damage scale with levels not with weapon (similar to Tentacle Lash) which it also means not crit-able.
• Additional-effect (optional): movement speed is decreased only a little as the victim lose balance, he can't walk really well. Keeping the opponent engaged , if he decide to disengage he won't be moving really far.
Warriors are supposed to keep enemy in line after all so this skill fits well into thier kit.