I'm not sure if I am missing a large issue with this re-issue of this classic game, but the low metascore and bad reviews are something I just can not relate to or agree with at all. The Chaos Engine is a fantastic game that has a rock solid design, it is also one of the first games I ever played on the Amiga and was thrilled to see a remastered version released on Steam. Playing this again for the first time in about 18 years was the ultimate nostalgia trip. This game was way ahead of it's time, as was it's music.
Even though the game is still hard as hell, that isn't an issue to me, it just makes me even more determined to try and beat it again. With the addition of online play, leaderboards and achievements, the Steam version of this game gives you more of a reason to keep coming back to have a go at it.
There are some small issues with this port however, none of which are truly game-breaking but can be annoying. The main issue is the co-op play. 9 times out of 10 the game play is extremely choppy and make it very difficult to play properly, I believe a patch was promised for this and I really hope it comes along soon.
Another thing that bothers me are some sound bugs that weren't present im the Amiga version. The sound of the the computer player teleporting to your location is elongated and high-pitched, it goes right through you now, especially after hearing it so frequently. The theme after completing a level is also bugged and doesn't play properly, instead it just cuts straight to the menu music, not a big deal at all but it's just something I noticed. It could just be my memory, but I'm sure that the monsters use the wrong death and pain sounds too, I don't ever recall the monsters using the same sounds as the player characters.
All in all, this is a good port of a great game and I definitely recommend it to old and new fans alike. There are some small issues but it doesn't make it any less of a great game. If nothing else in this game does anything for you, play it just for the soundtrack.