There was.....
Legacy of Kain: Soul Reaver (1999)
Devil May Cry (2001)
BloodRayne (2002)
Shinobi (PS2, 2003)
Castlevania: Lament of Innocence (2003)
Chaos Legion (2003)
Prince of Persia: Sands of Time (2003)
Ninja Gaiden Black (2004)
God of War was released in 2005. Hack and Slash beat em up games already exist before.
Legacy of Kain: Soul Reaver (1999)
Devil May Cry (2001)
BloodRayne (2002)
Shinobi (PS2, 2003)
Castlevania: Lament of Innocence (2003)
Chaos Legion (2003)
Prince of Persia: Sands of Time (2003)
Ninja Gaiden Black (2004)
God of War was released in 2005. Hack and Slash beat em up games already exist before.