>>300091908
1. Be at a corner
2. Pre aim to where you think an enemy is
3. Move sideways
4. Shoot (without even checking if anyone is there, because that would take too long)
5. Move back in to cover

The amount of time you are visible should be less than the average human reaction time. This works great because there's no acceleration time and suppressive fire doesn't do anything. Contractors prevents this by adding a suppression mechanic and an extremely long movement acceleration time.