This fix works for the original CD/DVD/ISO version of Samurai Warriors 2 (not the Xtreme Legends expansion, which has slightly different memory addresses). It also applies to the version sold on old digital stores (like the now-defunct Games for Windows LIVE version).
width=1920 height=1080
Search trusted gaming preservation communities (like PCGamingWiki or specialized GitHub repositories) for the Samurai Warriors 2 Widescreen Fix . Samurai Warriors 2 Pc Resolution Fix