Although she didn’t manage to find her father, the Aquanis princess did acquire some precious earthly experience as a result of her quest. Lianah Ld can now eat ice-creams without getting a headache and has stopped thinking of Clint City swimming pool as a tourist attraction. As for her moody temperament, well, no change there.Lianah Ld ! is a legendary character who is only available by carrying out missions connected with her. To obtain thischaracter, you must unlock her last mission before April 28th at 11.59pm (GMT + 2:00)
As long as it's not under expired missions you should be able to progress and complete the mission even without the flash client recognizing it as an active mission.
It depends on the mission. Winning rounds, dealing damage, gaining pills etc count. Missions like win X missions with 2 (some clan) don't advance.