Give this one a spin - find commands available:
compgen -cline bash built in for giving command completions.
https://www.gnu.org/software/bash/manual/html_node/Programmable-Completion-Builtins.html
Best use is to check if hunt the wumpus is installed of course.
man bash, and look for the compgen / complete section for more info.
Lots of fun to be had if you are mischievous.