Simple as that. Is it possible to make a weapon which always decapitates the target? (I'm aiming at an Executioner's Axe and a Bow, second is optional).

From the dust of information on the internets I found out that "Set Decapitation Chance" can be used with equip/unequip script, but that would affect also the effects of most popular stuff like Killmove Plus and Dance of Death, besides - I have no idea what are the default values of Decapitation to set on unequiping the weapon.

Help from experts?

Nuthin'...?

Have you looked at any of the quests/scripted scenes where an NPC get decapitated - like the game opening scene or when the player first enters Solitude?

Yes, I tried with both the first scene and the Solitude first execution - still nothing. :\

I am still a beginner with this stuff, but have made a few weapons so sorry if this is wrong/not possible, but could you set the script conditions to only activate when the weapon of your choosing is equipped and then disabled when unequipped? If not maybe a workaround would be to create an "enchantment/spell" that had the attached script and applying it to your weapons. For example the much like the mod (unbound weapons i believe?) I made a bow that when equipped gives you special arrows. The script was attached to an active effect on the weapon which activated when the bow was equipped. As said before im still learning and wouldn't really know if this would work and if it would how this would affect other mods alike. anyway hope that helps if not sorry!

I would recommend trying to unpack the .bsa scripts for the Dance of Death mod if you want to figure out how to do this. I have a feeling it might be complicated though, and I am fairly certain there is no way to have 100% chance of decapitation, since it seems that kill-cam moves only trigger if the circumstances are right when you hit the opponent. (I have played with Dance of Death's settings at 100% before, and still only about half the time killing moves or decapitations would occur).

Yes, Dance of Death was the closest but as I though, it applies to the whole game and whole Players Default Decapitation chance which I don't want to change (compatibility with other mods etc.)

I don't know exactly what DOD changes, but if you have figured that much out, wouldn't it be possible to change the same decapitation values only when the player equips your weapon, and then set them back when it is unequipped?