"complete remake" means to completely change or redo something from scratch. It implies starting over and making significant changes to create something entirely new. Full definition
It was only when I decided to break out my dusty old 360 copy of the game for comparison purposes that the true extent of Raven's efforts became clear; in fact, I'd even go so far to say that the game should be more accurately described as an almost complete remake of CoD 4 rather than the mere remaster suggested by the title, so extensive and accomplished is its revival for current gen. (impulsegamer.com)
12 long years later, Bluepoint Games is releasing a from - the - ground - up complete remake for a new generation of gamers and for those of us who have been dying to get back into this universe. (leveldowngames.com)
Metal Gear 1 and 2 complete remake in Fox engine (n4g.com)