What I'm going to say first and foremost is that, this trailer for Top Boy is for season 4 and NOT season 2. It is a little confusing but, I'll explain. My understanding is that, Top Boy came out in 2011 and ran for two seasons. However, when Drake became a executive producer on the show, season 3 became a new season 1 with the previous seasons labelled Top Boy: Summerhouse. I say all that to say this, if you want to get into Top Boy, watch Top Boy Summerhouse first, both seasons as they are pretty good.
As for this trailer, WOW! I'm going to re-watch Top Boy for a recap but as far as I can remember, the last season was really good and this new season seems to only expand on that and you can tell, money has gone into this production to raise the levels and the stakes. It is great to see some of the old characters back especially some of the new ones introduced in the last season, so let's see what fate they will have now, I can tell...bodies will be dropping.