If you find any bugs or issues to discuss with the dev team and other users, please join our official discord server; https://discord.gg/94qFECw

I can't find anything that I've missed.

Other than “beat the game without dying” and stuff, I’m not gonna bother with those. I’m at the end of the game now and working on 100%ing every area. As an achievement hunter missable achievements bother me so I’d like some spoiler-free hints for missable achievements if any, although considering how far I am in the game it may be too late for me for them. Also what are those secret areas with mini boss-ish enemies behind fan gates? There’s nothing interesting inside except the mini boss....

How to check map percentage?

I don't know how to reach the first one (already have both power jumps and dash after double jump perk) and how to open doors guarding book in Barren. Does someone know how to deal with those?