While recently replaying R-Type Delta, I wondered if it is possible to beat the game without shooting the main cannon at all, a thought that never occured to me before (I already did beat the game without charging the wave cannon, and got the note for it). I'll bet it'd be possible on easy, as you automatically have the pod on that difficulty level, and could use it to damage any enemy you'd have to (ie, that you couldn't avoid or ignore).
I LOOOOOOVE Flying Omelette!!
Crawl and 1000