Fighting multiple monsters mechanics

[jackguerri]

Hi everyone i just got munchkin adventure time and bites (this one got stolen with my backpack yesterday) anyways i checked on the internet to find the answer but still i cannot understand how some fighting mechanics work.

for example i'm level 1 with +6 bonuses and i find a level 3 monster (so far so good) but then another player plays a wandering monster level 10.

now i think i understood that i have to be level 14 to be able to fight, even if i could easily kill the first one, and maybe escape from the other (not sure about this whole sentence)

and after that how does the fight goes on? do i resolve the first monster and then the second one, or since my level is higher than theirs put together do i automatically kill both of them? (this looks like the same thing to me but it's better to ask)

thanks for your time!!