Katakis is a side scrolling space shoot-em-up by Rainbow Arts who went on to develop the Turrican series of games. This game was later re-released in 1989 under the name Denaris.
Players must defeat multiple enemies on each stage before encountering a much larger boss blocking the path to the next. There’s also a co-operative play mode where the second player must help defend the main ship controlled by player one.
There are references to Katakis in the game Turrican 2, which includes stages heavily influenced by this game. One secret displays the text “Katakis lives” on screen before encountering the boss.