I broke the 300K barrier in Lumines’s Challenge Mode last night and was rewarded with the Lights skin (featuring Nobuchika Eri’s song of the same name) for my efforts. After listening to the original version, the game version of the song is a bit of a letdown. The squawking seagulls in the game version may have had something to do with that.
I also managed to improve on my 60-second Time Attack mode record again. The record now stands at 55.
It may seem counterintuitive at first but the key seems to be to patiently aim for combos instead of individual deletes and to keep to the middle of the screen as much as possible.