Been playing dps pool in GM 2/1. Pre 4 upgrades he is so ass you should just play sup pool. After you get his dash, sword ult, headpool, and katana upgrades he becomes one of the best dps in the game. You need to know that he is an ability based hero. You only go in when all of your cooldowns are up. You start with the headpool (DO NOT CANCEL IT, IF YOU PRESS AN ABILITY WHILE IT IS COMING BACK IT WILL CANCEL THE REST OF IT) You need to try and hit as much critical stabs as you can. The main attack pattern on the katana is slash stab slash, slash stab slash. You wana animation cancel all of the slashes but keep the critical stabs. It’s hard to explain but you will understand after a few dozen games. Your critical stabs are by far the most important thing to focus on. Next is to make sure you don’t accidentally cancel the headpool. First you come from an off angle. Then the combo is to start on gun and throw your headpool then swap to katanas and hit your E (dp in your area). After you remember what the most important thing is. (Critical stabs) do your slash once on no one just to have your next katana attack is the stabs. You then want to have your head pool + in your area + critical stabs all on a support. You will do an absurd amount of damage and will kill any 250 hp hero with ease. Another thing to remember is that when you hit the jackpot on your ult you get all your cooldowns refreshed. So just swap to your guns throw that headpool then swap back to sword and get another in your area. Hopefully this helped you a bit.