Mass Effect Legendary Edition Achievements Guide
I spent three weekends trying to 100% this thing. The Legendary Edition bundles all three games with some visual overhauls and bug fixes, which sounds great until you realize you have to grind through roughly 200+ achievements across three full campaigns. Here is what actually works. First thing nobody tells you: achievements carry over between games in some cases, but not the way you might think. If you import a Shepard from Mass Effect 1 into Mass Effect 2, certain Paragon/Renegade choices you made in the first game actually count toward the relevant achievement in the second. I caught this accidentally on my third playthrough when I noticed the "Paragon Shepard" achievement unlocked after I made a specific dialogue choice in ME2 that I had already handled in ME1. The carryover is inconsistent though. Some legacy decisions register correctly while others flat-out do not. The biggest time sink is the multiplayer achievement. You need to reach player level 35 in the multiplayer mode. This is where most people hit a wall. The multiplayer servers were shut down, which means if you are on PC and did not pre-purchase anything before the shutdown, you may not even be able to access multiplayer at all. On console it still works if you have a copy, but on PC it is essentially a dead mode for new players. This makes one entire category of achievements effectively unobtainable unless you are playing on Xbox or have an existing save file from before the shutdown. Check your platform situation before you start. I wasted four hours trying to unlock multiplayer achievements on PC before I realized the mode was inaccessible.
For the campaign achievements, the most efficient path is difficulty on Normal or higher. There is no achievement for completing the game on any specific difficulty, so you can absolutely play on Normal and still get everything. However, some combat-related achievements like dealing X amount of damage or getting Y number of kills track independently of difficulty, which means grinding on the easiest setting saves you maybe thirty to forty percent more time per encounter. Not a huge difference but over three games it adds up to roughly eight to twelve hours of your life. Story-related achievements are mostly straightforward. Complete the main mission, save the galaxy, that sort of thing. The tricky ones involve romance. Each game has its own romance lock. You can only romance certain characters in specific games and certain romances require you to reject other characters in the same game. If you try to romance Tali and Legion simultaneously in ME2, one of the achievements will fail. I learned this the hard way after finishing ME2 with a fully stocked Romance log only to discover two achievements had not unlocked because I tried to keep my options open too long. The trick is to pick one romance path per game and stick with it from the start. There are also some collectible achievements like finding all the loyalty missions or completing all the side quests in each game. These are tedious by design. ME2's loyalty missions are particularly finicky because some of them have branching outcomes where you can fail the mission entirely if you make the wrong choice early. I missed the "Get all loyalty missions completed" achievement on my first run because I chose to side with Jacob during his loyalty mission in the Krogan Genophage cure questline. The game does not warn you that this decision locks you out of Grunt's loyalty mission achievement path. You have to replay large sections or start a new game to fix this.
Another edge case that tripped me up: the ME1 ending choice achievement. There is an achievement tied to completing Mass Effect 1, but the Legendary Edition changed how the endings work. The original Citadel ending was removed and replaced with a new ending cinematic. Depending on which version of the game you have installed, the achievement tracker may or may not register correctly. I noticed the achievement stalled on my save file after completing the game twice with different endings. Reloaded an older save from before the final mission and completed it fresh. That worked. If an ending-related achievement is stuck, try reloading a save file from at least two missions before the finale. For grinding weapon proficiency, the easiest method is the Cerberus Arena in ME2 on Normal difficulty. Pick the hardest enemy type available and let your character's class abilities do the work. A fully upgraded Banshee with Warp and Incinerate builds can clear entire waves in under a minute, racking up weapon XP very quickly. I went from Rifleman 3 to Rifleman 7 in about three hours of focused arena grinding. Same approach works for Sniper and Heavy weapons. ME3 has similar arena modes but the grind is longer there because proficiency requirements scale higher. Save data transfer is another friction point. The Legendary Edition requires you to import saves from the original releases. This works fine on PC if your Steam or Origin library still has the old games installed. The import process takes about ten to fifteen minutes per character depending on your hardware and the size of your save file. I had one corrupt save file from my original ME1 playthrough that refused to import no matter what I did. Deleted the corrupted file, re-downloaded the game, and imported a fresh save. Took twenty minutes total to get a working character into ME2.
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If you are planning to do this properly, expect to spend roughly forty to sixty hours across three complete playthroughs, plus an additional ten to fifteen hours for multiplayer and grinding. The co-op mode in ME3 is also shut down, so multiplayer achievements on that game are similarly blocked depending on your platform. The whole experience feels like it was designed for players who had the original trilogy already in their libraries rather than newcomers, which is probably accurate given the 2021 release date. My recommendation if you are just starting is to focus on one game at a time. Do not try to juggle multiple achievement lists across all three games simultaneously. The romance and story choices will create conflicts that slow you down significantly. Complete ME1 on one save file, import it to ME2, complete ME2, import to ME3. Keep a separate save file for experimentation if you want to see different dialogue outcomes without breaking your main achievement run. Download links and official store pages are available through Steam, Origin, and the Microsoft Store depending on your platform. The achievement list itself can be viewed through Xbox Live, PlayStation Network, or Steam achievements panel directly inside the game launcher. Nothing fancy, just the standard platform tracker. It does not always update immediately after you unlock something, which is a known issue across all three games. Sometimes waiting a few minutes and reloading from a save helps the progress bar catch up.
