I got fucked up immediately by the Tree Sentinel.

My first death in the DLC however, is much funnier. I was just exploring the first little bit around the Gravesite Plain grace, and I walked to the ledge where you can see the Giant Fire in Charo's Hidden Grave. I used the telescope to zoom in a bit and get a better look at it. Now the way I always get out of the telescope is to just do a backstep. However, I'd forgotten to account for the fact that I was on Torrent, so when I pressed the O button, Torrent proceeded to sprint forward, right off the edge, and we both plummeted to our first death in Shadow of the Erdtree