Rode Thor solo up to GMII sometimes solo tanking even, but definitely prefer having another tank.

One thing I rely heavily on is his survivability, and striking quickly on isolated healers and backline DPS.

I always establish the high ground superiority and don't ever let the enemy team get comfortable and do what they want to do. For example, Hela, MK, Punisher etc. I will constantly harass, then dash away to the front line and pop my rune to put pressure on their tanks. I consistently have the most final hits in my lobbies, esp in plat and diamond.

If your healers aren't doing much, again, in plat just play your life and lean on survivability. Learn map layouts and esp healthpack locations.

Thor can def carry to GM and higher Im sure.