Despair is very effective against other tanks, so make sure you're in range of the opponent's highest health champions.
Despair has a 0.01% scaling. In game the tooltip only shows despair doing more % health damage per every 100 ability power. For example 500 AP = 5% health every second + 2.7% base and 24 additional MD at level 5.
Amumu's pre-level 6 ganks are fairly strong, provided the lane is pushed. A pushed lane, teamates with closers and good damage or teamates with 2 or more Crowd Control abilities can often result in a kill, even against enemies with Flash. They key is to hit Bandage Toss sucessfully for the stun, and pre-level 6, you will often only have 1 chance to do so. Bandaging from a bush straight to a target looks flashy, but often, teamates will not be able to fully maximize the damage they deal due to reaction time needed for your move. It can also be difficult to hit since enemies sometimes move in an unpredictable manner. A surer way of hitting Bandage Toss is to walk towards the enemy from the opposite direction of your teamates, preferably after your teamates have engaged the enemy, which places the enemy within striking range for your teamates. Bandage Toss is not cast until Amumu is chasing the enemy unless the enemy and Amumu 's teamates are still engaged in battle by the time they are within range. When Amumu is directly behind a fleeing enemy, it is easier to predict their path.
阿木木的Curse of the Sad Mummy, is crucial in team fights and can often be the deciding factor. You should try to have it ready for when a team fight breaks out. Always try to use Curse of the Sad Mummy on as many enemies as possible while your team is in the vicinity.
If you are running away from an enemy, you can Bandage Toss over a wall to a neutral minion camp to pull yourself over the wall. It's not advised to do this if you cannot survive the aggro from the minions.
Using Bandage Toss slightly before being knocked back by abilities will first kick Amumu back and then pull him to the target hit.
Attempt to disengage from Amumu as cleanly as possible after he uses Curse of the Sad Mummy, heal up, and attack his team again. It is a major source of his power, and if it doesn't lead to a large victory for his team that the enemy can't recover from while it is cooling down, Amumu, and his team, are much more vulnerable.
If Amumu is jungling, pick up Sight Wards in your lane to help prevent a potentially deadly fight. If you don't have wards, another great hint that he's ganking is if the opposing team in your lane suddenly turns aggressive, especially in a situation that would put them in a bad position.
Amumu is a champion that especially synergizes well with teammates - as a result, he is fairly weak alone, and he is fairly lacking in the regard of escaping. Many popular junglers are easily able to beat Amumu in a one-on-one fight - gain control of the river and jungle with wards can allow your jungler to locate and kill him.