Ok Seti, I have found one so far after about 6 hours through with 3 different characters. I have made a town disappear from the map, with only my house there

Problem is, you have to pass that boring Gohart.
Spoiler
Connerac could be saved or doomed through player actions.
I found exploring for lorestone has much more incentive than learning shouts in Skyrims. There are some really interesting and fun mini stories there.
The tresh are pretty tough opponents, especially when together with other mobs, which they often do. I think there's some level scaling that makes challenges somewhat adequate to your level as long as you're in that area with that level range. The tresh is quick, has 3 forms of attacks and its projectiles are pretty fast. It's easy to fight alone, but with other mobs around, dodging or blocking attacks from all sides is very tricky. I got overconfident once and got hit ONCE, which it punted me into other mobs when they chain roundhouse kick+impaled me to death, from 100% to 0%, no time for potions or anything at all.
This game lack venues where you are locked down to one small arena to fight off tough opponents.
Spoiler
When you're fighting the Widow, you have to face her centipede type pets and they are pretty interesting fights. Could make things really rough if you are overconfident. Their poison bullets home in to you and they predict your dodge path to pounce you, so they are quite fun to fight with at hard mode.
I'm looking forward to more challenging encounters where you need to face all sorts of mobs at the same time so you have to deploy strategy rather than mere reflex. I am currently playing a seedy stealth type dagger rogue specialized in assassination, an evil mage that rage destruction in her path, and a judical "cleric" might/sorcery of the Fire god. I'm gonna rage more havoc on my mage first.