Here is a quick guide for all the collectible locations. You can go for the first 25 or go for what ever 25 is easiest for you. I hope it helps!
Mission starts at:
The Pilot's Gauntlet 0:13
BT-7274 0:45
Blood and Rust 1:35
Into the Abyss 4:42
Effect and Cause 9:06
The Beacon 11:38
Trial by Fire 15:52
The Ark 17:04
The Fold Weapon 18:00