Halo: The Master Chief Collection: Halo: Combat Evolved Anniversary

Assault on the Control Room loops one bridge-and-room sequence, Two Betrayals runs back through it, and Keyes reuses Truth and Reconciliation. 19% of reviews bring up copy-pasted rooms, identical corridors, backtracking or earlier levels replayed in reverse, or single out The Library, Assault on the Control Room or Two Betrayals, mostly to complain. That includes 16% of the reviews that recommend the game and 27% of those that don't. The Library, named in 6% of reviews, comes up far more often than any other level: "The Library might be the worst level ever made." One fan who loved the opening wrote "The first 6 chapters are just pure magic" before conceding the game loses steam at The Library. Another summed up the method as "Make a 10 minute section, copy and paste the entire thing 5 times and call it a chapter", and a third wrote "In one level you walk through about 30 identical rooms."

Players also get lost in the identical rooms, since the game rarely marks objectives: "I spend more time trying to figure out where to actually go than I do in combat." The Anniversary version adds floor arrows to The Library, and a few reviewers credit them with making that level less frustrating; one called it the only level that is clearly better in Anniversary. Defenders say the repetition fits the architecture ("It doesn't make sense for a tower to have completely unique floors.") or, in one case, that critics "just need to get good".

13% of reviews criticize the remastered graphics or tell readers to switch to the original look, and 78% of those reviews still recommend the game, often with the advice to press Tab. Many say the remaster changes the mood. Everything is too bright ("Everything is too damn bright!"), so dark Forerunner interiors and the swamp of 343 Guilty Spark lose their menace. Others say models and textures borrowed from Halo: Reach and Halo 3 clash with the original art, and that Keyes and Cortana look worse. One reviewer wrote that "they completely misrepresent the original atmosphere Bungie was going for in certain missions". The remaster also draws new geometry over the original collision, so players shoot invisible rocks and branches: "Meaning you'll hit air sometimes, because the walls are lies." A smaller group likes the remaster; one wrote "Personally I thought the graphics updates were an overall positive".

The March 2020 release drew a wave of technical complaints. About 3% of reviews report audio bugs, most of them in 2020: the plasma pistol playing its overcharge sound on ordinary shots ("I just hope you like the sound of a charged plasma pistol because even when you don't charge it the sound still plays"), music cutting out or looping, and dialogue overlapping. 4% of reviews note that the classic mode was built on Gearbox's 2003 PC port and carried its faults, such as missing fog, broken bump mapping and Jackal shields that didn't change color when hit. Players also reported that "weapon spread is broken on frame rates higher than 60", weapons that couldn't be picked up until Windows was updated, cutscenes locked at 30 fps and achievements unlocking out of order.

Fixes arrived over the following year. Reviews from mid-2021 credit the collection's Season 7 update with restoring the original look ("Season 7 of MCC has finally restored this game to it's former Xbox glory.") and adding mod tools, though at least one reviewer held that audio and input problems remained. After that, far fewer negative reviews name only technical problems.

Campaign co-op, the two-player limit and the missing split-screen draw complaints in 10% of negative reviews, and some positive reviews raise the same faults. Both players get kicked to the menu with "connection interrupted" when one PC loads faster than the other, the non-host plays with heavy input delay, the two drift out of sync, and a dropped connection means restarting the mission. A few of these players say co-op was the reason they bought the game. "I don't mean it's a little buggy, I mean it is unplayable," wrote one. A June 2020 review quoted 343 Industries saying a rewrite of the legacy network code was out of reach and concluded "Don't buy this if you want to play Co-op with a friend and relive that childhood nostalgia". Most of these complaints date from 2020, but they kept coming: "Coop desync is still an issue 4 years later." Players also miss split-screen ("This game does not include local co-op.") and campaigns for more than two players. Some reviewers had no trouble, and others say Reach and Halo 2 have the same problems, so part of this is a collection-wide issue.

These complaints concern the collection as a whole. Some reviews describe Microsoft account sign-in loops (including during a free weekend in October 2021), an internet requirement for the single-player campaign ("The game idiotically requires internet to play the single player campaign."), a second large download after installing ("all that 9.79 GB just for menu"), or confusion over Steam's DLC label, which led some to think they needed the full collection. They don't, as one early reviewer pointed out: "you do NOT need the Master Chief Collection in order to play this game!"

Crash and freeze reports cluster in 2023. From December 2022 a memory leak ate RAM until the game stuttered and crashed, which some reviewers tied to AMD graphics cards: "Who doesn't enjoy having to quit out of the game every 20 minutes to resolve a memory leak that nobody bothered to fix?" A reviewer reported it fixed in November 2023, writing that "the memory leak seems to be fixed".

Players describe long levels with few checkpoints, checkpoints that fail to trigger, and progress that is lost when you quit a mission, which hurts most on higher difficulties. One wrote of "Incredibly unforgiving checkpoint frequency and poorly designed large scale maps", another that "campaign mission checkpoints don't save when you quit".

The Warthog slides and flips over small bumps, and the timed Warthog escape that ends the game magnifies it: "The warthog in particular handles like a balloon animal".