Glad to hear someone else finished it, and without quick saves no less!
Better than Doom single player IMO, but that’s because I care more about story than weapon or enemy variety.
Hard agree on the objective systems. It works pretty well, especially for the era. Supposedly a lot of the logic is elevator based triggers because they programmed those early.
BTW the mines were great against melee enemies, you can kind of roll the thermal detonators. I do wish enemies used and dropped non-blaster ammo. Often felt like I had to use the trooper rifle to save other ammo for bosses or bigger groups.