Question about the "Codex of..." achievements (all secrets)

[Button Eyes]

There are many achievements of this type, basically requiring you to find all secrets in an area, each containing several levels. What I wanna ask is, is it cumulative, or must be done in 1 run? Like if you miss a secret in some levels, do you have to play from the first secret you missed up until the last one, or is it enough to just grab the ones you missed? And does level skip invalidate this achievement?

[Geo]

https://steamcommunity.com/sharedfiles/filedetails/?id=3163789877

tells u what u need to know.

level skip and all weapons disable many achievements, not worth risking.

[Lanzagranadas]

Codex of Italy (Venice + Bartoli's Hideout + Opera House)
You need to obtain all secrets in all those three levels in the same playthrough.

By starting a New Game or New Game + the game will not take into account Secrets obtained in previous playthroughs.

By loading a save file at any point in any of those levels you'll be sent back there and the game will remember your Secret count at the moment you made that save.

That's why it's recommended to keep multiple save slots. Say you have a save from a previous playthrough at the end of Venice with all its secrets, you won't need to start a new game and replay Great Wall and Venice, just load that save and continue from there.

[Button Eyes]

Originally posted by Lanzagranadas:

That's why it's recommended to keep multiple save slots. Say you have a save from a previous playthrough at the end of Venice with all its secrets, you won't need to start a new game and replay Great Wall and Venice, just load that save and continue from there.

Yup, I have at least a save on every single level, usually near the end. Didn't have to replay the cities of Vilcabamba and Khamoon since I can backtrack to get the secrets I missed. Sadly, there's a lockout early in St. Francis Folly so I have to replay all of Greece.

And I can confirm it must be done in 1 playthrough. I have collected all of Egypt's secrets in this run except the flying Uzis in Sanctuary Of The Scion (but I collected on my first run) and no achievement until I re-collect it again.