Minecraft wiki entry for Combat, associated text: The hardest enemy to defeat, all other players have 20 × 10 HP (10 hearts). If the player is engaged in a duel, be sure to be prepared with at least iron tier armor and weapons as their opponent will make quick work of them, especially if they are unprepared/have better weapons than you. It will be great if they could get some help, either from allied players, tamed wolves, iron golems, and/or snow golems. Engaging other players may possibly be the most challenging fights in Minecraft, depending on the player and the other's skill. Observe battle tactics and use them to their advantage. Use negative splash/lingering potions and flint-and-steel if allowed. When the opponent attempts to spam them with sword hits, block with a shield at first, then backpedal and fire several arrows from an enchanted bow. Then, sprint-hit or hit critically to them to finish them off. A fail-safe is to drop an anvil on them from 24 or more blocks high, which will kill them.