The only difference is that I'm using Archery with double crossbows for higher crit and the Scoundrel's passive to gain a really insane crit rate, a combination I had been looking forward to for a long time.
I too used Entangling Shot for a very long time, however somewhere mid Nightmare I swapped it out for Bola Shot/Acid Strike for I felt it was better suited to deal with the insane monster hordes I encountered and just made the switch to Imminent Doom. My other attack has always been Chakram and set to Razor Disk ever since it became available.
My other abilitles are Vault/Action Shot, Marked for Death/Grim Reaper, Caltrops/Jagged Spikes and Rain of Vengeance/Stampede.
My strategy is to slowly crawl through the dungeon until I spot a monster group. I set up 3-4 Caltrops on the ground and Mark one enemy for Death. Then I throw half a dozen Chakrams/Bola Shots at the marked enemy. The Chakrams wreak extreme havoc among the group, which comes charging at me like mad, thereby triggering the Caltrops... all of them simultaneously. What I do now is Vault out of the way and watch the enemies entering the area of death an die in droves. If the enemy is very strong (like for example blue monsters), I additionally call down a Rain of Vengeance and watch the shadow beasts knockback my enemies into the death zone over and over again while I pelt them with Bola Shots - very fun.
Yes, it was actually very fun till hell difficulty where I got stuck at Belial, who has a nasty habit of one-shotting me. Since there's not much I can do any more in terms of leveling, I knew passing this test was about the gear - and therefore required either dozens of hours of mindless grinding or a trip to the Auction House ($_$). Neither prospect looked very appealing, so I left it at that for now. My backup plan was leveling the monk who seems to sport higher survivability and use him to farm the higher levels of hell for better equipment, but I ran out of steam in Nightmare and at the moment I feel absolutely no desire to touch this game again. Oh well, maybe time (and heavy patching) will heal the wounds...