First robot killing game - featured bad speech and "Evil Otto" - "Fight like a Robot", "Got you humanoid", "Intruder Alert!" etc.
(fuzzy search, these MAY match the game, or they may not)
Coinop.org Member Ratings / Comments
Comment: "FYI- the infamous heart attack suffered by the gamer in the arcade in the early 80's happened in a little strip mall video arcade called Friar Tuck's. The poor guy actually got a coronary from the Evil Otto! This arcade closed in early 2003, and was the last of it's kind in the Upper Illinois area (Calumet City), save the Alladin's Castle in Chicago Ridge, which is an absolute joke!"
Comment: "My favorite arcade game of all time. Intense action that never lets up."