This is a nice start, you seem pretty knowledgeable minus the Duncan woopsy. My only 2 criticisms would be to create a script and practice it before recording, and pick a theme for your video.
for the first point, the long breaks, pauses, and stuttering to relay information makes it difficult to listen to. This is mostly a confidence thing which isn’t easy when doing your first video so I understand. With time it will get easier but try and be more focused with your videos, this will help immensely.
The second point is perhaps a little bit of a nit pick. You seem to be doing two types of videos in one, and sadly, this approach isn’t working too well. The first type is an informational video and it’s going pretty well. Your knowledgeable about what your subject matter is, though the delivery needs a little work as stated. I have no doubt this will get better though. The second type is a Let’sPlay type video where you go through the whole game, showing your path and objectives, and detailing your choices. The downside to these is the long travel in between where nothing is really going on. You try to alleviate this by fast forwarding through this footage, but from the watchers prospective, this is extremely jarring and difficult to view. One thing you could do is just cut the portions of the video out where there’s not really anything going on and picking back up when something interesting happens. Create a market for yourself in game where you want to cut footage (popping open your game menu and quickly closing it a couple times helps if you are fast forwarding your own videos and looking for cut points). Then before going into an area you know something is going to happen, stop and describe what’s happening. If you run into a random encounter, that’s fine, keep a scrap piece of paper and write some notes, noting the time stamp of the recording and what happened. Then later during editing you can decide if it’s important enough to include, or just talk about it after the fact at your next break.
I know this is a long reply, but these were points I wanted to offer as I get bored at work, and watching SS2 videos is a great way to get my own creative mind juices going. Wishing you the best of luck out there and have fun!