Such a great game of the past now with achievements, updated visuals, and more brings much satisfaction to many old school gamers, including myself. Now that you’ve finished the game and all is done and the achievements are completed, it could be said that it sure was one hell of a ride. Nightmare is stackable, so you will unlock any lower difficulty achievements as well upon completion. Please refer to each Nightmare achievement within the guide for tips and such for each part of the game. During this step is also when you’d want to go for the “ Speed Run” achievement on Recruit difficulty if you did not get it yet. While on your way through each run, try and grab as much of the miscellaneous stuff as you can to save yourself some time (no chapter select available to go back later). What you’re going to want to do is to go through each of the three parts of the whole package on at least Recruit first in order to unlock Nightmare for that part as well as to get a feel for the game if you have not already. So now you’ve had your fun or you’ve decided the fun starts here. Otherwise, have a blast! Blast a few demons while you’re at it! Much like many other amazing games of the past, enjoy it! There isn’t much sense in achievement hunting this gem of a game, but if you simply wish to get the Gamerscore and move on, skip ahead to Step Two. In general, this is a solid list with a mix of challenging and simple achievements. This is the same as the 360 release in 2012 with the exception of no online multiplayer. Unobtainable/glitched achievements: Noneĭoom 3 contains the full original game, its expansion pack Resurrection of Evil, as well as a brand new never-before-seen set of seven levels, Lost Mission complete with fully re-mastered graphics and more. Minimum number of playthroughs needed: 6-7 Approximate amount of time to 1000 : ~45 hours

Estimated achievement difficulty: 6/10

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