And? Sometimes a strike happens. It does not always have the outcome the strikers intended ...
RC has been conversing with him. As a number of other posts and posters have noted, what Durkon has brought to the table so far isn't much to work with. RC's current move, if he is indeed trying to literally shoot the messenger, is to send the message "raise your game if you are serious about negotiation and making a deal."
That message is not for Durkon. The message is for the god, Thor, and the other gods (who may not back Thor's play) {see RC's remarks in Strip 1209 panel 8} whose first messenger to TDO/RC finally showed up. {See panels 9 and 10 of strip 1205}.
Also, since when are "most effective" methods required in OoTS?
Heck, the Order itself isn't optimized ...
Blundering through is a whole
thing in OoTS.