Cool vibes sneaking around! I got to the room with the knife and E prompt, but was unable to pick it up and had to restart. Next playthrough I made it through the courtyard, but eventually got stuck because of the door bugs. Doors are probably the biggest issue.
Also, are you using dropbox to get around the 1GB restriction? I didn't see a lot of memory usage (no textures), so you might want to look into slimming down the build. UE5 has a ton of plugins active that might not be used, and you can compile to shipping build to reduce size as well.
Thanks for posting!