I've just been replaying Zanac. I did another thing for the first time the other day: I got weapon 6 fully powered up.

Naturally, I used those power up statues. (Weapon 6's ammo is so limited, I think it would be very unlikely to keep it long enough to be fully powered up otherwise) It still didn't power me up all the way - at that point, weapon 6 was just a smart bomb (it instantly killed every enemy on the screen, rather than releasing a ball which kills every enemy on the screen when it touches something) But then I quickly got another weapon 6 powerup. Then, you get one more use of the weapon, which turns every onscreen enemy into a 1-up.
I LOOOOOOVE Flying Omelette!!
Crawl and 1000