This set of 8 levels has been made with the word quality in mind. It's Mind here, not Muscles! We have tried to find a good mixture of action, architecture and adrenaline. Some of the levels may be a breeze, others may be a real pain in the *ss. But remember one thing: YOU DON'T HAVE TO USE THE CHEATS!!! There are a few very though places, but they can be done. When it seems you can't get around them without using the cheats, you may be doing it the wrong way and/or you may have missed one or more (valuable!) hidden rooms (which contain power-ups, weapons and/or ammo). Hidden rooms, as said before, can always be recognized in some way (different texture, different light-level, etc.).
DEU (5.2GCC and 5.21), BSP (1.2x) and their many contributors; Id (no comment); all those people who have been so kind to send us remarks and feed-back about our previous wad-files (NATHRATH and SERENITY); every WADmaker whose WAD has been a source of inspiration for the rooms in ETERNITY; all those people who have given feed-back on ETERNITY already.
And all those many others we have forgotten.
8 new levels from scratch.
DEU 5.21 and 5.22GCC, plus BSP 1.2x and IDBSP.
There are a few small HOMs at the beginning of level 1 if you play it with Doom 1.2 or 1.1. The HOMs won't handicap you very much as they never appear in places very close to you.
There is a sort of elevator/bridge combo in level 2 of which we aren't a 100% sure that it works error-free. That is: there is a very chance that you will encounter something strange there if you go back (which you don't have to...). A few players have mailed us about this. It seems that the behaviour is very unpredictable, and it even varies from version to version (Doom 1.666 handles this differently than other versions).