The final room in Search and the Rescue berry are also possible leftless, but I was only able to get each once, so I decided not to go for them in the video. The music cut during the room in the thumbnail was from cutting 3 minutes worth of failed attempts. The pauses were from consulting maps to help remember where the possible berries are.
0:00 Start
5:02 Depths
10:58 Unravelling
14:49 Search
21:08 Rescue