We both make levels. I made Subway, Crypt, Church and Skull, Azer makes most of the others including the big single player levels.
Azer made Fistful level 1, I made level 2. I did the new graphics - Fistful took bloomin' ages - that was a massive undertaking. Together we are updating his blog site Azeraaron because we have literally hundreds of levels between us - we thought others might enjoy too. We had a group of players that used to meet up every week back in the day and we'd have new Deathmatch levels ready each week.