CAUSTIC SPECIFIC THINGS:
2. When knocked down, lurk close to a trap, that will prevent others from pressing 'e' to finish you off since the trap will detonate and cause damage to them.
3. Caustic can see enemies through his gas as long as they are inside the smoke and taking damage. Much like how digital threat works. Be careful though, the gas affects the vision of teammates and enemies alike. No damage for teammates.
4. Traps can be used to block entrances. My personal favorite is placing them on blind corners to cover our rear laying a trap for an incoming enemy.
dont fire on an enemy when they have a fair angle to fire back at you. always have the advantage on the angle when firing.
Strafe jumps in their face while lazering them at close range all day.