improving and adding options for Berzerk gameplay element

[starwindz]

There are some issues in the original arcade version.

1. The gameplay becomes too repetitive as the game continues.
2. It becomes too difficult after certain levels.
3. There is no way to kill Otto.

reference:

1. I can say without regret that the game is fun and satisfying to play! The only problem with this game is that it has so many repetitive scenarios that it gets tiring. (from Google game review by someone)
2. https://www.retrogamedeconstructionzone.com/2020/03/berzerk-review.html?m=1

[starwindz]

https://gamefaqs.gamespot.com/arcade/584080-berzerk/reviews/175540