The idea is to speedrun the first level getting all of the house robots destroyed (probably by using the death pit)
the games are about creating your own custom robot and then battling other robots with it
here are some videos to give you an idea on what the games are like
https://www.youtube.com/watch?v=4wEW6ZuBRbE (windows)
the windows version is probably the easiest one to accomplish this in
https://www.youtube.com/watch?v=bCllmPM64UI (GBA)
the first game in this video (Robot Wars: Advance Destruction) would be the most challenging to accomplish this since there is only one pit and its in the corner of the level and there is a 1 minute time limit and it only opens after 30 seconds also the house bots dont seem to leave their corners on their own so you would probably have to find a way to push them into the pit
the second game in the video is the GBA version of Extreme Destruction seems to only have two house robots instead of four and a much more generous time limit
i am not an expert on either of these games and i do not want to learn how to TAS so i am only sharing this because i thought it was interesting enough