The opening here is a #queenspawnopening . Not sure of the exact classification.
Black doesn’t really have much to work with, and I should have played a bit more aggressively in the opening, I feel. Patience turned out to work in my favor. I hoped my opponent would make a critical error in a semi-closed position. When I saw an opportunity to complicate things, tactically, I took advantage of that. It was strange that he chose to use so much time thinking about his next moves, though.