Made it to Stage 7 today on Normal mode. Certainly one of the top 5 shmups on the C64 (again). Super responsive controls, excellent graphics (better than in Soul Force and Zeta Wing 1) and great entertaining level bosses. Especially liked the wasp boss in Level 6, though that one was a bit too easy to beat compared to the previous stage bosses. But I liked the bio theme, seems inspired by Thunder Force IV Stage 8 boss. Music has also been improved somewhat in here compared to Sarah's previous games, although I still think it could be better. But overall this is an absolutely gorgeous title for the humble 8-bit platform. Must have!