have you ever been stuck with out a weapon at night with a ton of mobs around. if you said yes, then read these awesome tactics.
1: a skeleton and any hostile mob: go around in circles until the skeleton hits the hostile mob, they will fight then giving you time to run away
2:a creeper and any hostile mob: when the creeper is about to explode, punch it and run. you have to time your punch right though.
3: a hoard of zombie pigmen and a ghast (for more experenced players) first alert the ghast, second run up to the zombie pigmen, third run around the pigmen making the ghast shoot the pigmen