Any fics which delve into Erwin's psychology? It's preferable if they're faithful to canon (and I'm kind of in the mood for non shippy fics?)
I also want to ask if anyone knows any decent fics where Erwin survives?
I'm afraid all the fics I recommend will be "shippy fics" because the only ones I read feature Erwin and Levi in some kind of relationship. As far as I'm concerned, you can't really understand Erwin's psychology without also understanding his relationship with Levi, so many of these fics do explore both Erwin and Levi's character in considerable depth.
In terms of canonverse fics, here's a few I can recommend.
Long Ride Home by @ladymacbethsspot
Southern Cross by @galpalpetraral
The Laws of Survival by @pasiphile
He Chose Titans by @masksarehot2
With a Door Between by @valisi-clark
Splinter by @valisi-clark
The Flap of a Butterfly's Wings by DrButtons (This is also a really brilliant Erwin lives fic that's as close to canon as I can imagine.)
In terms of "Erwin survives" fics, I have a rec list of Titan Erwin fics. In addition to Dr Buttons brilliant fic linked above, I'd also add Coup de Grace by @cherryamber and I've also written Broken.
