Oh yeah, the Arkham series is very time consuming if including all DLC. The main game isn't so bad, but the challenge maps really try your patience. In Asylum you have to deal with the imprecise controls and doing Shock and Awe Extreme.
In City you have to do all Challenge Maps with top rank with every character. Total waste of time, but at least the combat trials become easy from here on out but the Stealth is the hardest is any of the games.
Then we cap off with Arkham Knight. While the main game is pretty standard, you get an assload of DLC trophies on top of it with the season pass. And not only are you doing the same old song and dance with combat, but they throw in racing trophies into the mix. And, man, a couple of those batmobiles (since there are several) control horribly when time attacking. Plus you get the last DLC pack which contains a couple of the hardest combat trials in the game, such as doing a 100x combo without getting hit once to summon Killer Croc and defeat him too amidst the free for all. Whoo boy, I took a break after that.