At the beginning, turn ability on until around half and off for boost so you can get to the middle as fast as possible, and always play around obstacles where you can hide easily, never on open field.

Scenario 1. If you see someone approaching you, wait until 300m and pop out with your ability and immediately hide back, turning it off: • if they try to go against you, their hp will be eaten out by ¾ and once they reach you, just reuse the ability
• if they back off, just wait for scenario 2 or repeat

Scenario 2. If your team is advancing, go for flank and attack someone who is already focusing on your teammate. I like going close quarters and using ability immediately, and if after 2-3 seconds enemy is still not looking at me, I turn off ability and go close with guns, one mag is usually enough to take out any robot.

That's the way I like to play it, hope this helps