As a reinterpretation, KDIZD doesn't live up to the original as it often loses the identity of the original levels, but as a set of entirely new levels, KDIZD fares better. Given the disparity in the map design, it comes as no surprise that each map was developed by multiple people. The intermission screen is good and I like the additional features, but I still maintain that the 2D map art looked more appealing (and it's infinitely better than no map at all!). The new level design is a lot prettier and some of the areas are fun to explore (especially the entryways and outdoors), but many of the new areas do still feel unnecessary and do little besides extending game time. Because of this, KDIZD is a lot like a monster zoo where you can find anything anywhere. A lot of them haven't been introduced/placed in a way which fits and hence they stand out a lot. The introduction and placement of monsters though, is a recurring problem throughout KDIZD. Others are fine and don't tend to have as many of these issues if at all.

Some are too difficult to navigate, some feature way too much backtracking and some hide essential passages/buttons too well. Most of the issues present differ considerably from map to map.

So I've played through all of it and have changed my opinion somewhat. Overall, I think KDIZD feels like a showcase - it's very pretty and is an amazing show of graphical and interactive features, but it doesn't play well, it fails to improve upon the original levels in meaningful ways and ironically, it doesn't have much of Doom's atmosphere. The gameplay of the original levels is smooth, fast and easy to follow, but now it's confusing and filled with backtracking and whilst the intermission screen is really fancy, honestly the original 2D pixel art looks more appealing. Loads of locked doors have been inserted everywhere which painfully draws out game time. In addition, many of the additional areas feel arbitrary and unnecessary and many of the new monsters stick out due to unthematic placement. Too much artistic license has been taken with the original source material to the extent where rooms no longer resemble the original ones at all. Top notch visuals & intro and the interactive features/intermission screen are both good, but the maps are too large and end up being labyrinthian (sadly the camera screens don't help much because of this).

Knee deep in the doot