ASTRO BOT

This one's pretty simple — you might have noticed that if you climb a ladder and stand of the non-disk drive side of the Mothership (the big PS5) in Crash Site, you can hear the rescued Ship Parts singing their names along to the music.

Well, once you've rescued every part, simply stand in this spot and you'll hear them sing together. Easy peasy.

To be clear, the parts you're waiting for are: Cooling Fan, GPU, SSD, Memory, and the CPU. So you'll need to clear every Nebula and beat the final boss to earn this trophy, as the CPU is in possession of the big bad.