Only tip you need is
Dmr Boltshot loadout, whatever AA and packages you want (I recommend jet pack for giving you so many new angles and routes, resupply cus its so nice to have more than 2 nades, dexterity/stability to win fights), keep moving forwards and practice those 5 shots, Br just puts you at a disadvantage
Also don't overuse sprint, bad kids always sprint too much and run into the fight and never get first shot
Learn to place nades, frags are generally better unless you're a bad kid that just tries to get 1 stick kill before dying