Thanks to Amumu's K/D/A and utility, he has a somewhat poor overall win rate. He does best in the early game, with a winrate of 49.5% in that phase. Unfortunately, he does terribly in the mid game, where Amumu's win rate is 49.15%., The difference between his best and worst game phases is only 0.4%. This small difference shows us that his power is uniform during the entire game.
Amumu has been picked somewhat often in the latest ranked League matches. In the current meta, his popularity is 4.7%. He is rarely banned during champion select. Obviously, very few players see him as a huge threat. In recent ranked matches, Amumu was banned 1.8% of the time.
Amumu is played mostly in the jungle position. This occurs in 86,5% of his rounds. Yet, jungle Amumu has the highest win rate (49,9%) of all positions but is less popular of a position (played 12,6% of the time). Currently, Amumu's meta game is centered around dealing damage. In particular, his build should mostly be focused on magical damage. Moreover, he is a decent tank champion. Dealing physical damage is the least significant part of Amumu’s playstyle.
If you are not comfortable with his skills and tactics, you won't find it difficult picking him up for the first time. Many players consider him to not be a tough champion to learn. Amumu mostly deals magic damage (76% of his total damage). He doesn't deal much of other damage types and should not be played as hybrid damage dealer..
Amumu deals a decent amount of damage during a normal game (14.823 damage). You could focus on building him as a powerful champion to crush your foes.
If you are looking for a dominating damage dealer, then you should maybe consider this champ. He has one of the top kill counts in the game among all champs. Furthermore, he has a fairly typical average champion death rate (6 deaths). Furthermore, Amumu's KDA is typically high with an average KDA ratio of 2.5 as well as 10.5 assists per game.
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