706,600
That's my final score. The Annihilator is the second best damn thing in the fricken game, superceded by that awesome needleship fighter.
Well, after playing through and finally getting enough points to buy the uber gun I think I've played it out. Not much replay value in this, but definetely a solid run. Needs some more boss fights (preferably with more to them than a single sprite that fires guns and rockets). Also, some conventional side-scroller additions would be nice. "Super-bombs", "Beam Cannons" and other powerups, as well as a multiple lives option (really annoying when I switched to the Shield Ram without knowing how to change weapons and had to start all over again). Finally, while the edutainment quizes were slightly interesting, it's all a bunch of rather annoying Grade School info. Would be nice if you could turn it off or have it as access to mini-games, rather than a necessary step to proceed to the next level.
Armegalo, any chance of an "Earth Rock Hunter 2?"