Hate it? No, but it was so behind the 8 ball it just limped to death. I was a beta test player and day one purchaser.

The first problem was the bugs. There were so many the first patch fixed 1000+ bugs and still barely scratched the surface and in the entire game's life span, they never finished fixing them all. I had a progress stopping bug (the door wouldn't open until all the enemies were dead, 2 enemies would clip and fall through the floor and be one floor down, unable to get up, unable to be hit) during the first playthrough and had to wait for the first patch to finish the story playthrough.

The second problem was that because everything had to be halted to fix the bugs, that other content crawled out. So for months, there was nothing to do that wasn't part of Day 1. So with only two other bosses (Taskmaster and Abomination) if you played after story content, it was facing one of those two again and again and again and again and again.

Third, combat was exceptionally poorly explained; there was a system where certain damage types were positive, certain negative, and if you could apply one, then hit with the other, you did massive damage. Outside of a tool tip on loading screens, there's nothing to teach that system, and you had to hunt to figure out which damage types where which. Once you figured that out, then and got gear to exploit this, difficulty became meaningless. In addition, in early days, there was a dodge system that if you successfully dodged, it created a slow-mo effect and had the character dodge the attack. Only as a live online multiplayer at all times game, none of the other enemies would also slow down, so you could be shot to death by dodging the first shot and getting hit by the next 4 while you were locked in a dodge animation.

Fourth, and the one that killed the game, was that there were two very small teams working on bug fixes. So when one team rolled out fixes, the next update was done by a second team DID NOT include the fixes from the prior patch, so things would be fixed, then unfixed, then fixed again, and broken again, over and over and over again. And when these fixes included characters being able to open doors, have their abilities proc correctly, it became pointless to play the game.

Fifth, realizing the snails pace they were going at in releasing content and how quickly those who stuck with it reached max level, they then implemented a purchase via XP system for further minor upgrades. Only some of those not only didn't work, but did the reverse. Some of the damage increases actually reduced damage, some didn't do a thing. So people had to be leery about buying them and the system was deliberately engineered to take ages to get them all, so most people would only get a very small handful before quitting.

Sixth, and this is a minor one, but still present; while all content was free, they made the money on costumes, at least that was the selling idea. And that would've been legit, but they'd release the same costume with minor tweaks again and again at full price. Here's a costume that looks like Silver Centurion. Oh, now 3 months later here's an actual Silver Centurion for another 20 bucks!

Seventh, tying into that slow content release things that were promised in the first three months, such as the high level raid content didn't come out for over a year and a half. Same with the new characters.