You're tanky and have good abilities
Use turrets to kill everything that moves, wall to trap enemies and escape, heal for sustain and pushes, and your ult to push and teamfight
Your ult can kill the hard creep camp, your heal lets you trade shots in lane, and your huge magazine lets you last hit and deny orbs like a god
Focus on early survivability and weapon damage
Transition into turrets mid game
Late game your turrets are annoying monsters that heal you and make your enemies cry.