Zarya Easy 5 Stars Hero Mastery All difficulties

0:00 Recruit
1:40 Agent
3:45 Veteran
Agent
Feel free to spawn the bot later. As long as it isn't as long as a 2nd wave bot. You can get away with less if you do the double gap jump in last room.
Veteran
The sniper room can be dangerous. The jump isn't necessary as you can walk up the ramp, but either way, snipers are priority enemies. When sliding, wait for it to lock in downward before turning for the other side. It's possible to boop the corner shield bots in the last room.