Just today I managed to beat Hecatia and Raiko.

This means I have now beaten the Normal difficulty story modes and Extra stages of Touhous 6, 7, 8, 10, 11, 12, 13, 14 and 15. In other words, all Windows Touhou games besides the rather strange Touhou 9 which plays very differently from other instalments in the series.

I feel pretty accomplished!