fuck this anime. Seriously, it's horrible. Basically no redeeming qualities. I hate it, I hate it, I hate it.
Story: To fans of the manga, I am so, so sorry. It's not a good manga, but by god it didn't deserve this. So this story is pretty bad. It lacks zero originality, it's really just a cliche shounen/harem cramming in so much edge it made the edgelord herself cringe. The setting is generic and undefined, and there are allot of obnoxious inconsistencies. The dialogue and exposition are also incredibly bland and boring. The anime tries to be a seinen even though it is 100% shounen minus the plot armor. Oh yeah, just so you know this show is obsessed with killing off characters. And the way they do it is absolute shit. Basically a character will tragically and brutally die, then it will immediately be followed by a comedy scene! They try to be dark, but there's so much comedy it can't be taken seriously.
Animation: the term "unfitting" is an understatement. I want you to think of lucky star, Now think of attack on titan, smash em together and- bam! Akame ga kill. Seriously, that's what it looks like, the characters are supposed to be these dark edgy assasins but they look like pastel moe waifus! The colors are so blindingly bright it's almost hard to look at. The character designs lack any originality, just look at tatsumi and tell me one thing that stands out about him. As for the animation it's self, it's just kinda "meh". Not appalling, but not impressive. The fights however are just, ugh. Boring boring BORING. The weapons aren't anything new and the "action" isn't interesting in the slightest.
Sound: The sound effects are kinda hilarious in an awful way. Like nothing sounds realistic or fitting. The voice acting for the dub is just blegh the jap is average, all the anime voices they use are nothing new and add nothing to the character. The op and eds are.... good. I'll admit it akame ga kill has good music, but they over use the same track so much I kinda hate it now.
Characters: seriously? Just, seriously? I mean these "characters" are so terrible it almost feels like an insult to my [rather low] intelligence. Tatsumi is trying to be every shounen cliche in one, he's so painfully (sorry for overusing this word) GENERIC. Even down to his design, nothing interesting. Akame is a stoic cold girl with a dark past, yawn. Mine is a tsundere and nothing else, just tsundere. Lubbock is a pervert and nothing else. Leone is a walking pair of boobs. Sheele is the "clumsy is sexy" girl. Bulat is the manly bro type. Najenda has literally no character. Chelsea is 'girl'. Tsusano is a dude that can cool. Hilarious. All the heroes are horrendous. As for the villains, they're even worse. Esdeath is inconsistent, and basically just a sadist with ever revolving tit size. Seryuu is offensively horrible, she's obsessed with justice to a point where she just kills innocent people because "hurhur justice". Wave is tatsumi with blue hair. Kurome is a more annoying version of Akame. And the rest of the Jagers are to forgettable to mention. All the minor villains are just evil smiles attached to people's bodies not further personality. In the entire anime, I'm telling you, there is ZERO character development.
Overall, if you really are interested, just read the manga. At least it has some effort put into it.