I was in the game, as myself, not the Inquisitor, in what appeared to be a strange version of the Temple of Mythal (weird building in a jungle setting). With me were Varric, Cassandra and Leliana. The dream started as a sort of cutscene, showing Leliana opening a blue door to emerge from one of the upper levels of the temple. There were stairs close by and at the bottom was an Eluvian - that was our goal apparently, but just as we were about to exit the building and descent down the stairs, the Eluvian started glowing, and Leliana quickly rushed us back inside and closed the blue door.
Out of the Eluvian stepped Morrigan, wearing her gorgeous Winter Palace dress. She hadn't seen us yet.
The 'cut scene' ended and suddenly I was viewing things through my own eyes, and the mission was to follow Morrigan without her seeing me. She walked this dirt path along the length of the temple, passing first one hallway leading back inside, and two more further ahead. The last one had an open portcullis, which closed behind her as she entered. Right after the portcullis the hallway curved to the right, and there was also a staircase leading back up to a hallway above it, which followed the same curve.
I had to do this sort puzzle involving a lever and some Assassin's Creed style free-running to open the portcullis, so I could follow her, which I did. But instead of following after her I turned back around to get Leliana and the others - who were still near the Eluvian waiting - so I ran back.
Unfortunately I had forgotten that Solas was scripted to appear from the first hallway the moment I solved the puzzle and opened the portcullis, and he was NOT allowed to see me because he would kill me if I did. And I nearly ran right into him.
Because Solas was now between me and my party, I had no choice but to run back, passing the last hallway with the portcullis and hide there behind a wall. I knew he was supposed to walk the same path Morrigan had taken so I figured, once he had entered the hallway with the portcullis, I could get the others and follow after them both.
And that's when Solas suddenly rounded the corner and stopped a few feet away from me. And I remember thinking "He can't see me, I'm holding the sneak button! D: Please go away!" He looked right at me at that moment and I saw his foot (he was wearing boots) fly towards me and I actually got a game-over screen - Solas had kicked in my face and killed me in one hit 
I respawned right after I managed to open the portcullis, seconds before Solas was supposed to emerge from the first hallway. I didn't want to get booted in the face again, so this time I entered the third hallway and ran up the stairs to where the hall curved to wait there for him.
There is this thing I do in games in real life, whenthere is an interesting villain I have to fight, I try to avoid fighting them for as long as possible, running around in circles to avoid their attacks and see how long I can last.
In the dream I had this really shitty bow with me, so I got the brilliant idea to shoot Solas in the face to make him mad the second he showed himself, and see how long I could last against him! Genius! 
Except he wouldn't show. There was a hole in the floor close by, so I looked, and I saw him passing underneath the portcullis, but he didn't take the stairs like I had, but instead took the curved hallway directly below me. So I did the next best thing, dropped myself through the hole, landed right in front of him and fired an arrow! Of course my aim was way off, but I succeeded in pissing him off nonetheless.
I don't remember what he said exactly, but the gist of it was "You have until the count of five before I set your ass on fire." after which he started doing a sloooow count down. That was my cue to start running in circles to avoid what I was sure was going to be a fireball lobbed at my face - and I managed to get myself hopelessly stuck in some bushes for a panicked second too because I'm an idiot. Of course Solas wouldn't be Solas if he didn't do the unexpected, so instead of a fireball he cast a fire glyph, the ones mages in the game often cast on the ground to explode.
Except this fire glyph - because Solas magic - formed underneath my feet to follow wherever I went, and started as a small circle, sloooowly expanding, and I knew that when it reached full size, it would explode.
Cue me panicking and running all the way back to where Leliana, Cassandra and Varric were still waiting near the Eluvian, and seeing this glyph slowly grow in size and power - I figured they could help me annul it or something. Instead, when I reached them, all they had to say were generic NPC lines! Not helpful at all!
I turned around and saw both Solas and Morrigan running away me - I dunno why they came back, but I chased after them. If I could just get to Solas before it was too late and plead with him to remove the glyph, then yeah... they ran up a hill, don't even ask me how Morrigan was running in that dress. I tried to follow but the hill was too steep and I slipped back down... and then the glyph reached full power, exploded and I woke up.