Sometimes, when fighting an enemy, your character will do a special move, with a third person view animation, instantly killing the enemy. But these types of moves seem to be random, sometimes being used on enemies with nearly full health, other times not having a finishing move at all during a whole fight.
What are the parameters determining when a finishing move is used?
Best Answer
Source: UESP wiki, "Skyrim: Combat" article
Finishing / Kill moves are not completely random. Finishing moves are affected by the in-game variables, 'KillMoveRandom' (default: 50%), and 'DecapitationChance' (default: 40%) and various factors, some of which are:
Source: UESP wiki, "Skyrim: Combat" talk page (edited to take into account the comments in reply to the original post) | TES wiki, "Kill Camera" article (edited to explain further)
You can modify the finishing move-related variables using the console commands,
set killmoverandom to <0-100>
andset decapitationchance to <0-100>
. Or, use mods like SkyTweak (configuration page screenshot), The Dance of Death - A Killmove Mod (configuration page screenshot) or Killmove Control which have UIs to help configure those settings. 'The Dance of Death' mod can even remove the 'last active enemy' restriction.