First impression: Great audio!
Your voice is spot-on, though I'd suggest turning the game audio a tiny bit lower than your own voice.
Video Quality is great; no lag, beautiful stereo sound.
One thing I'd suggest: The video is a bit long. This is just my own opinion so I don't know if anyone else might agree, but I'd upload at least 15-20 mins of gameplay. That way, I could upload more so in turn I'd have more videos to post weekly.
Final thoughs:
This video is great! As I said before,the audio quality is clear, the video quality is top-notch. I'd recommend you take notes from some successful YouTubers in order to excel your channl further.