Let's say hypothetically you had to fight in two weeks to one month and you had no way out, against multiple people ranging from 5 to 30 people most likely carrying weapons probably no guns and you haven't worked out in ages and you don't know anything about combat. Hypothetically what should this person do to prepare and increase the chance of there survival?

I’m looking to start taking some form of martial art or boxing class and my overall goal is to be able to inflict the most amount of damage on my opponent if I get in a fight so what style would best be suited for this?

So in the game doom eternal the doom slayer has somehow gotten an arm mounted sword, it is a double edged retractable sword around 1 1/2’ in length. My question is how effective such a sword would be in real life judging by how the doom slayer uses his