You place Belith and Shevatas in the same area adjacent to the Dark Demon. Shevatas then throws his knives with all elligible dice he has, supported by Belith, who grants him a free reroll. Also reroll any blanks with the rest of Shevatas' dice (we scored 2 times 9 damage with this combo). The OL will defend, but has to ensure he has some gems left in order to save Skuthus (If the OL burns up all his gems, Skuthus cannot escape the heroes and no event can be brought to bear). After that Belith moves into the area of the Dark Demon together with 1 of her guards and attacks with her spear with a good chance of finishing it off (we rolled catastrophically 2 times, not even penetrating the armour, but you could as well throw the spear and either enhance with rerolls or engage with the Yuetshi Knife, if even the throw did not kill the Demon). If she fails, Conan will send the Dark Demon back into it's own dimension for sure. Belith's Guard ensures the Heroes cannot easily be harmed because they have no gems left and also ups their count against hindering.