The definitive version of the original game! Handles really well if memory serves me right, and isn't anywhere near as hard as Dread. Zero Mission and Fusion are fantastic.
ZM tells you where to go, but it definitely doesn't tell you how to get there. There are usually multiple routes, some easy and some extremely difficult.
Really? Fusion stops holding your hand around the time you get to sector 4, but it's strictly linear until you're literally about to go fight the final boss--the game explicitly blocks you from backtracking to areas that aren't immediately plot-relevant.