Hmm.. also.. What I did.. I put the hammer and normal weapon on quick keys..
so you can switch really quick between hammer and normal weapon..
Then when I get the hammer, I sneak up to someone, target him, get hammer out and click on the auto attack button.. =)
If you don't kill and he starts running keep chasing him lol~
When I get chased by a hammer I click the ice cube really fast (have that one on quickkey too). Mostly the person with the hammer runs away then..