Fade to Silence

NOTE: For anyone who plays coop in case the video above does not mention it. When one player picks up any shard it picks it up automatically for the other player as well.

If Player 2 has already picked up a shard in their own game they cannot see the shard in Player 1's game since they already acquired them.

The video guides are helpful, but on the whole, most shards are close to points of interest, which are the white diamonds on the map. At the end of the game I visited a lot of points of interest that weren't greyed out and just looked around using the vision. Eventually I only had quickening shards left to find so I specifically watched that video. (The chap who has created this all shards video has one for each of the four types as well).