Roadhog can now only 1shot heroes with 150HP or less
Aim for injured opponents at
around the 170-180HP mark since the hook does 30 damage
No
Spray them from afar with right click to further lower their HP as you line your hook up
Combo with Hook, Primary fire (left click) and a Melee attack.
It's a lot to take account for but with this it's like his nerf never existed