Gonzalo Suárez "Gonzo": Project manager, game design, chief developer & software design
Ignacio Pérez Dolset: Chief mission design & co-game design
Jorge Blanco García: Graphics design & chief graphic artist
Jon Beltrán de Heredia Olazábal: Lead programmer & software design
Javier Arévalo: Software design
Pablo Toledo: Programming (video engine, FX effects & German patrols AI)
Jorge G. Mourelle, Asier Hernaez Lavina, Guillermo Toston, Daniel Estival, Jorge Fernandez: Graphic artists
Additional design: César Astudillo

Complete credits in the manual.