Thanks for the comments everyone, very much appreciated. Crush the Castle and Boom Blox are great games, the comparisons are really flattering. Just wait for the new levels ;)
We're gonna redo the instruction screen with all this lovely information about ammo types and so on. Also like the idea of the platforms exploding when you win, might add that in if it's a popular idea.
Thanks for the bug reports, keep them coming, gonna address them one at a time. The fireball weapon was backwards, you're meant to get it after level 10 and not lose it after level 10 XD
Oops, you aren't meant to have the fireball till after level 10. Made the loading screen stay on a little longer so you can read the text. I'll add in a more informative instruction screen soon. Hope you all enjoyed the game!