Some random thoughts:
Circle Tower - this mission was pretty painful with this character. My warriors felt a lot stronger. The room that was most unexpectedly hard was the ambush by the greater rage and all the shades. That is until Stealth and Luring came to the rescue. DD's were tricky of course. The Fade was actually really smooth although I had to fight Sloth twice since I botched fighting his Arcane form the first time and caught a Crushing Prison.
Kitty - Stealth allowed me to cheese this encounter by retreating to the stairs, then uncloaking at which point Kitty came into melee range and the rage demons stood around. She disabled me multiple times, but without her minions I won the war of attrition.
Redcliffe - I wanted to save the militia. This was part of why I bought Rose's Thorn first, and part of why I did pieces of other quest-lines to help get gold and level. Getting to the point, I needed to be Level 12 (so they have Scattershot) and also have Swift Salves (to run down the hill and give me more DPS) in order to save them all. I also had some traps, but they typically weren't practical. Takes too long to set them up. This was one of the biggest PITAs of the whole run since it somewhat depends on how stupid the militia gets and depends on how well you can keep track of the threats and assess which corpses need to go.
Kolgrim - Mentioning him because his encounter has 2 mages at once... stealth kill first mage after Dirty Fighting then stealth and kill second after Riposte. Kill Kolgrim's lackeys next.
Wolf Lair - Put a bunch of traps in the first room by the door. Sadly they didn't work as well as I hoped. Mostly mentioning because I used a rock salve here the second attempt. Interestingly, I got through the first room and the overwhelms without one the first time, but then screwed up in the next room and didn't hit a health pot when I should have. But anyway it probably made the second attempt a little easier. In any case, I crafted zero of them and ended the game with 6 or so. So I don't think I am buying the recipe ever again.
Zathrien - So with 0 spell resist, I just hit Stealth and then went behind him to use Dirty Fighting, deathroot and stab. Paralysis runes obviously help.
Denerim Blood Mages, Thy Brother's Keeper - both have areas with multiple mages but with 0 spell resist I used stealth to break them up.
High Dragon - Flemmeth - Paralysis Runes, Swift Salve, stab. Needed some health pots though
Jarvia - This fight was fun with this character just hit and run with stealth. Annoying that Jarvia seems immune to dirty fighting, and also annoying that I can never detect the level 5 traps at the top of the stairs until I am behind them.
Corrupted Spider Queen - I never used the cheese method, so attempted that. I think it ended up taking longer for me to get that right than if I had played it "straight up" although it was likely cheaper.
Branka - Amusing fight, although I reloaded after she went straight for Oghren and hit him the first time.
Howe - Stealthed at the beginning and took out the first mage. The second was too stupid to help the rest out at that point, and I stabbed everyone else. Howe is a much worse rogue than me.
Cauthrien - Killed her in the room the first attempt with 0 health pots. My "Warden Sense" told me to hit Swift Salve and Incense of Awareness (gave me defense 164) before triggering the cutscene. I was apparently fast enough to run to the nook before the scattershots went off. At that point I started on the mage, then threw Acid, Fire and Soulrot on the clump of enemies. Only Cauthrien could hit me until Incense wore off. Concentrated Deathroot and paralysis runes for her. After she was gone, Stealth worked. Used another Conc DR, Acid Flask and a Lightning coating to finish off the archers.
Alienage - I already sort of mentioned Calandrius, but wanted to mention the encounter before the warehouse, and then Devera. Both of those were pretty hard with SnS, but Rogue makes it simpler since you can stealth.
Palace District / Fort Drakon steps - I managed to get killed in the palace district when a mage I didn't expect showed up to reinforce the area. Likewise, an extra mage showed up on the Drakon steps after I killed the first two which was annoying. That time I was able to just stealth and then go back to spell resist.