Hello, I am Odradin, I've been in since early alpha and one of my favorite characters to play is Tychus. This build specializes in burning tanks or low health heroes. You could choose dash instead of Armor Piercing Rounds, but I like the follow on it. I've been using this build since I bought Tychus and I rarely find myself not first in damage. The only setback is that it's more late game than early, play it safe until level 13 and then you're basically unkillable. Enjoy!