Yes and no. Games didn't give a toss about wasting the player's time back then, so you'll be backtracking to medical every five mins to heal up, and that backtracking takes several minutes.
There's not a huge challenge in combat with regular enemies, and the AI is weak. You can always retreat and disengage and the AI will not attempt to follow you. You can often just snipe them from long range and they can't do anything about it.
Then there are quite a few unfair situations, like surrounding the player with explosive barrels and just blowing you up as you enter a room. Again, this could fly in 1993 but not so much now. It's cheap. Or the enemies that decloak in front of you and can't be detected by any means. By the time you can see them and react to them, they've hit you at least twice and irradiated you. Cheap.
Then you get to a boss and the rules of the game change for no reason. Cheap.
Takes a deep breath. Exhales, aahhh fresh air!
Just kidding. I get your points and you are probably right.
Did you enjoy the game overall, got your moneys worth? Worth £20?