Owlboy

Story related and cannot be missed.

After leaving the temple, you'll soon arrive in Advent while it's attacked by the pirates. Try and stay sneaky as much as you can in this new area so you won't have to fight them. You can hide behind crates and bushes.

You'll have to fight two helicopters on your way, and can't avoid them. For the first one, fly around it and shoot the bombs while they're close to it so they hit the helicopter when they explode. For the second one, lure the missiles to the helicopter by flying around it so they hit it instead of you.

For the last part, you'll need to stay in cover behind the rocks to avoid the giant ship shots and fly to the left. A few scenes will play after that and you'll get the trophy.