Shadow of the Tomb Raider

Score attack is harder than time attack but still doable.
Thankfully, only bronze is required.

The key here will be to keep your multiplier up.
Another tip is also to keep a few orbs in places you know you'll come back to in order to keep that counter alive (the center of the elevator is a good example of that).
You'll need 250.000 points for bronze.

For the purpose of the achievement, I only focused on the areas before the elevator.
The elevator is way harder to manage, looting orbs and doing the required moves to make it go up without dying isn't that easy.

Start by playing the level once without aiming for the score.
This step is helpful for you to discover where the lanterns are.

After that, go for the score.
In the first area, I did a full trip and grabbed the orbs on both sides to build up a decent multiplier already.
While entering the 2nd area, grab the orbs nearby then shoot all lanterns from the central platform, they'll make big points by now with the counter.
Same goes for the 3rd area, grab as many orbs as you can before shooting the lanterns to maximize the score.
Using this method I was over 400.000 points (with a counter over 90) by the time I reached the bottom of the elevator and took more time to finish the level to avoid dying.
I ended up at 498.000 points.

Note pour les francophones : la description du succès en FR indique "gagner toutes les médailles" alors que cela devrait être "n'importe quelle médaille". Gagner le bronze est suffisant pour débloquer le succès.