"Berserk" means crazy, describing a frenzied warrior in Old Icelandic.
Berzerk
Berzerk was created in 1980.
Berzerk happened in 5200.
Apoptygma Berzerk was created in 1989.
The EPs - Apoptygma Berzerk - was created on 1997-10-01.
Berzerk means crazy/running amok, if that's the term you are looking for.
Rocket Science - Apoptygma Berzerk album - was created on 2009-01-23.
A berzerker is another term for a berserker - a person who fights as if frenzied.
I believe that the theme is fighting. He says, "Go Berzerk!" which most likely means to start fighting and go crazy.
Rap Critic Reviews - 2010 Berzerk by Eminem 4-15 was released on: USA: 9 October 2013
Just keep playing
To lose control and act crazily. To go mad or insane.