Expedition 13 crashes on attaining phase 4 reward.

Error code: 132250_0x76B914_ST76561198093252037

I did it this way and it worked (for expedition 5-13, no redux, fully unlocked from github):
Put Steam offline, copy the JSON, start a new game with the expedition, save, load and save again.
I did it 8 times for all expeditions.
Then I put steam to online and loaded the first save from expedition 5.
There I clicked on one reward and it put the file from expedition into normal.
I then checked my current expedition save from 14 and I had everything from all 5-13 expeditions unlocked.

I just forgot No Man's Sky all that time. :D
I did play 1-4 when they came out and now 14.
And I will still play any expedition (I haven't played yet) when its replayed, if I don't forget it again...

Expedition 2, however, is completely busted. You do not start on the correct region, and so the first rendez-vous point is completely wrong. Not that much of an issue, I naively thought, just have to change my location to the Pujarmu system and go on Tibertant Alpha, craft an Exocraft there and then head to Popolist using the coordinate (+26.51, -53.95) to find the portal and then just manually check off the Rendezvous 1 milestone.
Except... When you go at these coordinate, I swear it becomes creepypasta level of corrupted. The closer you get to the coordinate, the more you see corrupted stretching texture coming from where the portal should be. If you somehow are able to get to the portal, there is a corrupted Gek that softlock you if you try to interact with them.
So yeah, unless this is fixed Expedition 2 is just impossible to experience vanilla now.

(had to make two comments due to character limit)

So, I've done Expedition 1 Redux, and started Expedition 2 Redux. Just like JustHere4Coffee said you do need some assistance with a save editor as the old inventory system is causing issues, but... It kinda goes deeper than that.
Expedition 1 starts on a Green solar system. That's not too big of an issue, it just unlocks one of the milestone earlier, so just be aware of that if you are trying to play that expedition as vanilla as possible.

As a follow-up: You can work around the issues in Expedition 9 and 10 by first using the Partial Complete file, saving and reloading, claiming the Milestone that allows building a Hermetic Seal, saving and quitting, replacing the Partial Complete file with the normal playthrough file, and reloading. This will leave some residual completed Milestones that you haven't earned yet but allows a mostly fixed playthrough. Once you do this, you'll see that getting to the Abandoned Camp in Expedition 10 on foot was possible, but you'd be queueing up for a round trip that will take you quite a few hours.

You can, of course, fix everything with a save editor, but aren't we mostly here because we are trying to avoid that?

In the no skips version, Expedition 10 and Expedition 10 Redux have both been rendered unplayable by applying "always spawn at ship". You will spawn many ku from the Abandoned Camp that is required to get the Hermetic Seal plan and fix your ship. I ran for well over half an hour before giving up.

Expedition 9 can also not be completed, as you cannot Upload Base while offline and therefore you cannot fix your ship. Like 10, this can only be resolved by using the "partial complete" file. Note that this one has no access to the Anomaly ever, which was part of the original intent of the Expedition.

Expedition 8 has issues where "always starting with Capital ship" replaces the custom frigate captain with a generic one who does not allow access to the Ship's Log. This can apparently be resolved by completely closing the game and reloading. You'll see the NPC name changes when it's fixed.

File pathname (Proton):
…/Steam/steamapps/compatdata/275850/pfx/drive_c/users/steamuser/AppData/Roaming/HelloGames/NMS/st_{steamId64}/cache/SEASON_DATA_CACHE.JSON

y is it Xd out?

There does seem to be a glitch with the Normandy; I added it via the "instantly complete Expedition 2 redux" files, the captain's name is showing a placeholder text rather than looking up what it should be from that placeholder, when reviewing my fleet I get the "accept/refuse" buttons instead of "visit/dismiss", and the Quicksilver merchant continues to offer it as an uncollected reward. By contrast, the Leviathon and Living Frigate work flawlessly from their Instant Complete Redux files.

Been using these files successfully, although with a little assistance from the NMS Save Editor due to the earliest expeditions (even their redux versions) using the old slot layouts - while the game will happily let you exist without life support for a while, if you try moving at all it will get upset with you!

Rather than put Steam into Offline mode, I instead temporarily block NMS from connecting to the game servers while I click "complete" on all the phases - you only need to collect the smaller things if you plan on continuing to use the save afterwards (or you fancy trying to copy it all over to your main save with the save editor).