This is the one lads. This *would* have been my favourite level of Ashes: 2063 but for one thing; In the original version, you could not get a Triple-100 on this level, as you'd either have to miss out on the Secret Exit, OR miss out on the final big battle and the last of the Enemies and Items. This has been fixed now, which was the catalyst behind this entire recording of the Enriched Edition playthrough. The twinge in the soul remains however, at remembering The Time Before.
~~Timestamps For Secrets~~
†: "Secrets" that don't count towards the Secret%, but might affect the Items%.
07:36 -- After flicking the switch that releases the Mutants into the station, return back to the stairs that led from the homeless man down into the station. A newly-opened shutter reveals a bugdog guarding a Secret room, AND-
07:47 -- A secret-within-a-secret, opened by flicking a switch hidden behind the weirdly out of place curtain. The grating behind the couch opens up to bare some light ammo, food, and an Area Map.
†08:13 -- The long train that leads to a side-path contains two Junk items that may count towards Item%.
09:32 -- After dealing with the mutants and bugdogs on the side route, look for a breakable vent. This leads to a comfy room with a Collectible Guitar (big junk) and some goodies.
09:58 -- In the nasty-ass brown brick sewer room before the Power room, jump to a thin ledge at middle-height. Follow it around for a Secret room with a Backpack, which gives a little of every ammo type and increases Capacities.
NOTE: Take care in the "Red Key Room" and the "Yellow Key Room". Both these areas have floater enemies that can take a long time to enter the room, so it is easy to miss some enemies by accident. Additionally, the Yellow Key Room has severe radiation, making it risky to hang around for the enemies or to get the new secret:
17:23 -- I believe this secret is new: in the Yellow Key Room, do some platforming to get to a high-up little tunnel. The Secret here is a Planet Of The Apes reference and contains a jackhammer, some ammo, a Brute Stim, and a nice little battle.
20:05 -- A vent above the soda machine can be broken and jumped into from higher elevations. It contains metal armour, a little shotgun ammo, and can open a door that adds some more tactical options in the combat encounter here.
†21:17 -- Not marked as a secret itself, but turning the GAS handle at the end of this hallway is what allows access to the Secret Exit.
30:28 -- The final Secret is just after the gas explosion, in the form of some junk, ammo, and pills next to a corpse. The jump down at the end of this hallway is a Point of No Return to the Secret Exit, so for full completion, go back and take the "normal" exit route. You'll be allowed to return later and take the Secret Exit.
