This challenge unsurprisingly provides a `challenge.zip`. `johntheripper` and `rockyou` produced the first password.
    puck02111987
Which extracted `alittlemore.zip`. This was cracked in the same manner, but with a different wordlist of unknown origin, to produce the next password.
    gz
What turned out to be the final archive, `flag.zip`, was more resistant to wordlists and simple brute forcing. Eventually I became curious about the contents, and searching for `pkzip.ps.gz` revealed that it was a part of `pkcrack`, a zip cracking utility that requires a known plaintext file be present in the encrypted archive. Since `pkzip.ps.gz` is included in the encrypted `flag.zip`, and available unencrypted from `pkcrack` itself, I had everything I needed for the final step.
In preparation for running `pkcrack` I downloaded `pkzip.ps.gz` and zipped it up in a new unencrypted zipfile, making sure the compression mode matched afterwards with `unzip -v flag.zip` and `unzip -v new.zip`.
    $ zip new.zip pkzip.ps.gz
    $ unzip -v flag.zip    Archive:  flag.zip     Length   Method    Size  Cmpr    Date    Time   CRC-32   Name    --------  ------  ------- ---- ---------- ----- --------  ----       74841  Defl:N    74321   1% 09-01-2022 19:05 11958b6d  KP/pkzip.ps.gz          42  Stored       42   0% 08-29-2022 15:26 5dd7a68f  flag/flag.txt    --------          -------  ---                            -------       74883            74363   1%                            2 files
    $ unzip -v new.zip    Archive:  new.zip     Length   Method    Size  Cmpr    Date    Time   CRC-32   Name    --------  ------  ------- ---- ---------- ----- --------  ----       74841  Defl:N    74321   1% 09-27-2022 16:07 11958b6d  pkzip.ps.gz    --------          -------  ---                            -------       74841            74321   1%                            1 file
Then `pkcrack` decrypted the contents of `flag.zip`.
    $ pkcrack -C flag.zip -c KP/pkzip.ps.gz -P new.zip -p pkzip.ps.gz
The flag was revealed.
    flag{YouU_4r3_Th3_R34L_z1p_Cr444ck333r!!}