I just finished building a Tetsuko deck based heavily on this list and from the two games I've played, it's a lot of fun (won one, lost one).
I would love to hear your thoughts on Quietus Spike. I thought it was an auto include for the deck at first but I had it in my hand one of the games I played and I didn't want to cast it. 6 CMC for a card that halves someone's life at the expense of a lot of hate from the rest of the table felt bad at the time. I'm gonna to try swapping it out for a Loxodon Warhammer, the lifegain seems nice for grindy games and the trample can help my Chasm Skulker and few other beaters get in for damage.