Hack and Slash
A sub-genre of beat 'em ups that originated from P&P RPGs where it's seen as derogatory. Differentiated from most beat 'em up by the fact that you primarily use melee weapons instead of bare hands.
Alternate names: Hack and Slay, Hack & Slash
but appears most often with the following genres:
* beat 'em up
The first Hack and Slash video game was released in 1984.