Simple shoot 'em up with 3 levels. Finish the game on each difficulty (do a full run on easy and use GOLVL3 for medium and hard) and destroy the golden head on 2nd level. ~1.5 hours, based on skill.
Simple shoot 'em up with 3 levels. Finish the game on each difficulty (do a full run on easy and use GOLVL3 for medium and hard) and destroy the golden head on 2nd level. ~1.5 hours, based on skill.