You can attack Lian whenever you want. If she is alone, she won't harm you enough. Just make sure you attack her AFTER some trouble. Most of the time you can be sure she is completely on cooldown and thus an easy target. If she is NOT snipe her.
Try not to prioritize to kill him first. Let him as your last dessert.
But you still can win against terminus in certain map if you have advantages of controlling high place with abbys spike. Use your tp, term cant hit you from far.
Max your shield. Place teleport first and try to track evie when she about to engage you. If she about to landing, then spam the landing place. And in duel 1v1 you need to jump or moving right left or both because she might miss her shot.
Skye will lose if up against Lex. Make sure you either have the last pick, or make a team member pick Lex, so that you remove the risk of facing him in competitive.