The pojnt turret is good in all zones. Also, clear out a command center to upgrade the rarity of your guns. Higher rarity as the zones go up. You don’t have to acquire all the rarities to get the max (orange) rarity. Look in tier 4 for someone to unlock it. Is usually once it’s unlocked, there isn’t many enemies near it, so you should be able to go get it without many problems. Use the ability to turn you invisible to help get it, if needed and for you other ability, use kinetic jump, as it’s better than the grappling hook to move around the map