Question

Who can kill enderman without armour ?​

Answer 1

Endermen are actually easy to kill if you're careful. First, make sure that the area around the Enderman is free from other mobs. Walk up close to the Enderman, put a pumpkin on your head, and grab a good sword. Then find the Enderman through the pumpkin and whack him.

Answer 2

Run into the closest water (or lay some down) or get on a boat -- water damages