Abéché = one 757-200 managed to land there recently in relation with..the Arch of Zoe's story.
El Geneina = no runway suitable for a 757-200
Nyala = 737-200 / IL 76 / 707 land there on a daily basis but extremely crowded airport at time with UNAMID mission and other commercial operators not to mention the lack of flexibility of local Sudanese Authorities.
El Fasher = idem
All airports are located in war-torn areas. ;-)