Hey bud!
Thanks for posting this! I wanted to give some feedback from my perspective
First off, your audio is really well done; great job on that. In addition to good audio you didn't waste my time with a 15 second introduction either, you got right in to the video, thank you!
Another thing is that you seem to know what you are doing in the game as well, which is good. The thing is though...I don't. I don't know what Terraria is (well, I know the gist of what it is, but I have never played the game). I'm not saying you need to describe the game each time and what you are doing at every moment in the game, because that could get annoying, all I am saying is that there didn't seem to be a purpose of the video.
"Hey guys, so-and-so here and right now I am looking for...blah" or "Ok, so my goal is...." Without a purpose to things like that, I have no idea why or what I am watching...I hope that makes sense.
Second thing is that your collab videos, I can barely hear the other dude...it sounds really bad. I would either make sure your buddy has something working well, record it and play it back to ensure good quality, or don't collab.
Finally, I wonder if it would help if you had some topics, some things you wanted to talk about while doing the menial tasks. When a video is peppered with "So yeah, uhm anyway..." "So...ummm....yeah so..." it makes me feel, as a viewer, that you don't know what to say and you are trying to fill up time. Look for updates to the game, exciting topics, controversial issues, things people have brought up on the Reddit Terraria or Web Boards regarding the game you are playing. You don't need to go from topic to topic, but when you feel that there is a lull in the video or you are scrambling for things to talk about, you have material to sound like you have a point to what you are saying!
All in all, well done videos man! Good sound quality (which I appreciate) and consistently posting. Keep it up.