I like it, but I must write an honest/fair review.
1) Troops are TOO weak. (refer to 2 if you think you should upgrade your troops)
2) Money gained is REALLY low.
3) New troops are quite pricey. (refer to 2 as well)
3) Both Mana and Food load EXTREMELY slowly. (I understand that's how it must be at first, and that's how it makes the game exciting, but come on, you start with 0 and it's just too frustrating because you can't even melee alone)
4) I liked how you switched the level types frequently, but honestly, the original game type (kill the castle) is quite boring and never ending with the weakness of your troops.
5) Overall, I personally liked it, but it's just too time consuming and really not rewarding, so I'm gonna have to say if you consider a sequel add some SMOOTHER gameplay, and DEFINITELY some method(s) of attacking without having to wait for Mana's regeneration!
-Weskk