I solo often with a hammer as a W/N mostly with a 5/-1 vampiric hammer too, a very long time ago I posted a hammer build I used and was laughed off these boards
But using an anti knockdown skill (balanced stance or dolyak signet) in conjunction with both drunken blow and desperation blow at max tactics can put out some awesome damage as well as stack up conditions which will fuel "Victory is mine" which is more than plenty to keep me alive and also gives even more value to plague touch. Throw in a few adrenal skills and whatever else the situation requires. I used to farm the FOW spiders with something similar.
It may not have the all round utility of a W/Mo axe or sword build, but it works and hammers are a lot more fun imo
