Took me a few tries, but managed to beat the last mission. I liked, that some of the mission names were related to areas in the nightclub. It helped to create ideas about the layout of the club. Flashing screen obviously emulated the lights at nightclubs ;)
Surprisingly "@" -character was an "enemy" here. A lot of games of this kind usually have it as a playable character (NetHack, SpurguX etc).