I still love this game, but the after fighting the control scheme for an hour (which I thought I liked at the time) I just gave up and adjusted everything closer to a modern set up (mouse aim, WASD move, etc.)
The game still looks good (if a bit brown) and the mechanics are as rock solid as ever, but everything is a little less impressive than it was back in 1997.
It's great to go back and play again, or even just to see where its sequel came from and what it built on, but if you never played it to begin with you might just want to skip on to MDK2.