It's a very good Let's Play. I like your voice, and you're pretty thorough about the game mechanics.
Seconded, though I only watched the last video. I have to admit though, it was a little painful halfway through with all the avoidable losses and not gaining anything from the battle due to not having enough marines to board the only onslaught that was boardable. If you care, you might want to be less stingy with command points in combat, keep a closer eye on the messages that pop up, and put a much higher priority on taking over the +30 FP objectives ASAP, with enough firepower to keep them held.
I do like how you edited out the extraneous bits and waiting periods in the video though.