Talus relies on his Rune of Travel to save himself from bad engagements. Look out for them and check stealth grass as he can try to use them as cover for his rune.

You can encourage him have to get close enough to shoot by using the shield Legendary to block shots and give him room to advance. If he tries to contest you on point then you can use Kinetic Blast to knock him off and use your shield to stay safe.

Skye's Ultimate can be devastating to your team's collective health. But you can be as close to it as you want as long as you break line of sight. If Skye doesn't put the Ult on the Payload, you can you said payload to block ALL Damage from it.

If you can see and kill Ying, Prioritize her over her Illusions. Killing Ying makes her Illusions despawn and prevents her from Healing/Shattering. If you can't see Ying and have no/low cauterize killing Illusions might stop healing from her.