Comment: "Twilight Fortress is a huge, nonlinear level for Doom 2 that uses the RETRES texture pack, and takes heavy inspiration from Eternal Doom. My goal was to make a large nonlinear level in the style of Eternal Doom, but with more of an emphasis on combat rather than puzzle solving and heavy backtracking. This level is quite large so If you aren't a fan of bigger levels this may not be for you as it can take about an hour to fully max.This level is unique in that you can choose any combination of colored keys to reach the exit, as long as you have one of each color. Although all the keys aren't required, they will open up secrets in the level that can aid you on your journey. Can you conquer the Twilight Fortress and unravel its many secrets?". An excellent outing from Napeyear.