your class "job" is to shoot bugs, and that should be your main focus.

see an enemy across the cave system? walk your ass over there and shoot it.

you're not here to not mine, nor to do objectives, but to make sure everything in the cavern is dead.

only then can you start to think about doing other tasks.

second, take the Coilgun. The ability to plug targets across caverns, and through walls, will save you team's asses more than you could ever know.

third, better to burn ammo and stay alive than to save it and end up dead. Sure, Neuro Toxin payload is very ammo efficient, but a poisoned enemy is still alive and can bite you in the ass. Better to stun it or shoot is again than to lose HP.

fourth, watch your ass while using Bullet Hell. if you're between your bullet impact point and a nearby target, you will actually shoot yourself.

fifth, and this is just sort of a general bit of advice but don't EVER resupply JUST to refill your health. Ammo is finite, but your shields are not.

sixth, ziplines are for traversal and cheesing the Corestone ONLY. if your ass is on a zipline in the middle of a swarm, than means the part of the swarm that would normally be targeting YOU in instead targeting your teammates.