Nice netcat... was an easy challenge worth 10 points.
There is a nice program that you can talk to by using this command in a shell: $ nc mercury.picoctf.net 22342, but it doesn't speak English...
Character codes come up a lot in CTFs and programming. You can recognize that some data may be character codes if you are presented with several numbers between 30 and 127.
This was easily decoded with CyberChef. Remember to use the correct base in the
From Charcode ingredient: