Hello my friends, this is my first guide to the use of Amumu champion. This build was made especially for people who like to get in the middle of combat and taking damage and not die, and it helps the team and much, because every team needs a tank.
Start by saying that is not irritating to build if you do not achieve good results at first, because that's how it works, you got experience of other past games. Try using the Amumu early in the game with someone close to you. Never go alone thinking you will make penta kill xD. Think about this: I'm just a player, I need help from others and they need my help!.
When you reach level 12 you will be much stronger, then you will now need more help on tank. The best thing to do in a game using the Amumu is always standing next to a ranged attack player, as Varus, Ashe ...
And while you're at level 18, Run like crazy just because you're invincible, that is, when you finish your build armor, HP you are ready to purchase items from Damage Attack, Or if you want to get much stronger, continue with build your armor, because the Amumu not need attack damage: D
I hope you enjoy this build, and Good Luck to you :D