Okay I actually watched every minute of all 4 of those videos. I put it on my TV on a chrome cast while I made toys for my birds. So I think you're going to be really good at what you're doing. Seems like you know what you like and there are other people who like the same things. It's interesting to me to look at someone who just started and is off on a good foot. There are a lot of different types of LPers, and nothing wrong with being similar to someone else. It's like music genre. Just have to say that before I say that you remind me of Lucahjin, which is a good thing because she is one of the most popular girls in LP's and she has like no hate or drama in her community. But your commentary is more mature.
So definitely I'm not your target audience but I can tell you that when I put your videos on, my husband stopped looking at his laptop and was watching you and tuning me out if I said anything. And then he even closed his laptop and watched you. Like you're really smart and really good at puzzles and people who are similar to you will sit there and watch you the same way they watch football. He said things out loud a few times like "she needs to put the thing.....blah blah blah" and then you'd figure it out right away. Seems like you're able to solve these things in the perfect amount of time for your audience and I can see you doing really well. Also you reference pop culture that your audience gets, which I saw in the comments. For where he would lose interest a little bit - that was when you were in between things for longer time but then you'd go "alright I have to solve this problem" and he would go back to paying attention 100%.
Also you're really funny and very likable. I would totally be like "I wanna be her friend" if we were in school together or something.
I would only say to change the production, which is pretty much what everyone needs help with when they first start. Video titles-I would change the fisting title for sure. That doesn't convey the vibe of you or that video, it sounds too vulgar. You are really good at making a dirty joke but it's not like IN YOUR FACE the way that title would make me expect. It might push away your target audience and draw in the wrong people - like people who just aren't interested (because they expected something else) or people who are creepy. You are perfectly subtle with that humor, don't let the title tarnish that.
The other thing is your audio. On my TV and on my phone it sounded quiet and boomy. The boominess got louder when I turned the volume up. Sometimes you whispered and that happens to me too, but there are ways to fix it. I just learned a bunch from a channel I found this week and I would definitely do what this guy shows. That guy needs to be in the sidebar here because he shows and explains the sound mixing SO well and he does it in surprisingly short videos.
The thumbnails would be good to feature one of the puzzles and maybe one of the characters doing a pose. I playback my video and pause on a scene that has a good pose. (I wish I was better at gimp though.) It's good for people to recognize something in the video from the thumbnail. Since you know gimp and stuff you would be good at it. Check out what Robbaz's thumbnails look like to see what I mean. I know you don't want to copy people by accident but it would give you and idea of how it looks when someone's thumbnails really convey what the video is going to be. You just make it you, like how you made your channel art.
I think you're going to do great. I'm the opposite kind of gamer, where I have really bad adhd and it takes me lots of time and rage to do tedious things. And I'm so terrible with lots of reading in games because I'm dyslexic so I never play those types. BUT despite all that, after a few minutes in to your first video I was like "dude I like this girl" and I would listen just because I like you. You definitely did hit a stride with being more outgoing and it hardly took you long. Maybe don't get married to the hi hi hi intro, just bust in with "welcome to another roulette's plays!" because that name is ingenious.
I'm glad I took the time to listen to your videos. Only because you sounded a little timid at first and because I saw the length, I associated it with the sea of monotonous LPers who have been doing the same thing for years. Sorry I had that feeling before giving it a fair look, I just see it so often. It's actually unique that you are this good right away and I'm happy I went back and really watched you.
Just keep making stuff and you will do well :D