Tactician Grenadier is pretty fun (Xesht T3)
https://reddit.com/link/1l7not9/video/15jk073vf06f1/player Currently level 86 when I did this just now. Mind you, my cluster grenade placement was pretty bad. It was my first time doing him with this character and I wasn't expecting the heavy stun to force him back out of my grenades. Otherwise, am pretty happy with how the build has turned out so far and I've still got a lot more tweaking to do. Hopefully will get T4 done once I can get the level 20 skill gems. Build utilizes Deepest Tower with presence stacking and Fallen Formation to stack banners with maximum valor (valour). I figured crit was going to be too expensive of a route to take so I wanted to try and focus on just pure damage and attack damage options. I'm also using the Stay Light, Use Cover ascendancy for defense which seems to work pretty well.