This is where most users fail. Unzipping on Linux does not automatically make the binary executable.
Extract the contents of the celeste-linux.zip file to a directory on your computer. This will give you access to the Celeste Linux files, which can be used for installation or development. Celeste-linux.zip WORK
Celeste-linux.zip is the official native Linux distribution of the critically acclaimed 2018 platformer Celeste by Extremely OK Games (Matt Makes Games). Unlike running the Windows version through Proton/Wine, this zip contains the native 64-bit Linux build. This is where most users fail
The most frequent error on modern Linux distributions: Solution: Install the legacy OpenSSL 1
error while loading shared libraries: libssl.so.1.0.0: cannot open shared object file
Solution: Install the legacy OpenSSL 1.0 library.