Tips for caustic?

@Noobby_Groovy777 I used to play a lot of caustic. You missed his golden age when there were more windows and you could chuck barrels really far through them. As cheese said use your barrels to monitor your back. Even if they shoot the barrel you'll hear it. Use those barrels to control buildings by blocking doors and funneling people inside the door you can mark best. Dont even put a barrel on that door. Let the enemy inside and shoot them. Placing your ult at the right time in the right spot is really important. The biggest mistake I see are caustics who don't preplace barrels and people that try to rely on gas to kill people. If someone is shooting you you don't have time to pull a barrel or your ult.