These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The female Judge on Ma-Ma's payroll believes she can catch Anderson by surprise regardless of who finds who first, but didn't know Anderson was a psychic and could see through any deception. She gets gunned down unceremoniously the instant they meet up.
Ma-Ma's second in command, who is shown as a formidable opponent, is defeated offscreen by Dredd and is then casually thrown off a balcony in front of Ma-Ma.
Ma-Ma arms herself, before Dredd enters her room, with an explosive charge that will detonate if she dies, but Dredd simply shoots her, doses her with Slo-Mo, and throws her to her death.
Complete Monster: Madeline "Ma-Ma" Madrigal, de facto ruler of the Peach Trees apartment complex, is first introduced by having several people skinned alive, then thrown out a very long drop while given drugs to slow their perception of time. Ma-Ma has the Peach Trees complex shut down to trap Dredd and his trainee inside and has no compunction opening fire into a crowd of civilians with Gatling guns to kill the two.
Fans' complaints over similarities to The Raid and the film not exploring Mega City One enough have constantly popped up, despite the film being in production before The Raid came out and its low budget not allowing any full exploration of the city.
There's also the Vocal Minority of comic fans raging that the movie was not about "Judge Death", the dimension-hopping death god. Apparently the idea that this movie was intended to serve as an introduction to the Dredd setting (and its insanely vicious but common "mundane" cases) rather than the more fantastical elements just doesn't fly.
Moral Event Horizon: Ma-Ma crosses it for some in the audience in her very first scene, in which she orders a trio of drug dealers Flayed Alive. She crosses it for everyone else when she callously massacres an entire floor of innocent people just to kill the two protagonist Judges. Which she fails at doing.
Visual Effects of Awesome: For an independent production with a budget of $45 million, most of the special effects and slow motion sequences are pretty impressive.
The Woobie: The Clan Techie, who had his eyes gouged out by Ma-Ma with her own hands, had them replaced with cybernetic ones and is threatened with death or torture if he fails. Or if she's bored. Thank god Anderson let him go.