Many displeasant things
1) Graphics:
First of all I would like to mark your graphics. It is bloody awesome!! It is better, than in first game at least like 10 times.
2) Music:
Second thing I got pleased - it is dynamic music. BTW, it should be better, if the music get back to normal, once there is less units on the battlefield, after a period of time. And Although I think, the music should be lined not with a number of units, but with their total mana cost. So the battle should be really dramatic, when there is Angels, etc coming into play.
And one more about music - I think the music should differ, depends on the situation - who now have a significant overpower - you or your enemy. Or you both have an equal amount of units. This would demand a total of 4 different BGM (1-starting battle, 2-battle go on, equal forces, 3-battle go on, enemy overpowered, 4-battle go on, player overpowered). To prevent rapid change of BGM by 1 new unit comes into play - you can make a delay beetween changes. I.e.: both have euqal power - suddenly enemy strts to spam units. That causes a trigger - set the timer to about 15 secs. If in that time player can't manage to equal forces - then change music. I think, that you got the point.
3) Gameplay:
3.1) Controls
Althought found it acceptable. The controls are fine, but somewhat they are not convinient. It is a problem to shoot arrows and train squires and palladins at one time.
3.2) Research
About research system. I found it quite narrow. I mean that player don't have enought flexibility. All that he can choose - is from 5 different choises. And in the "I Epic War" there was about 20 choises at a time.
I think, that castle upgrades ideaa was qiute good, but it should not automatically upgrade units. You should upgrade units on their own, and castle upgrades should just unlock units and spells upgrades.
3.3) Storyline
Man, It was terrible. The storyline can't survive even a 10 year old boy's critic. I mean, why the rebel leader don't just kill king's general??? Don't he have his own general??? Why the king makes you the general??? Why elves believes you and leave you to battle "shdow humans", cause you may easily trick them and rejoin human army.
You should have hired a writer. And for about a 15$ you would had an awesome story...
4) Overall
I found this game quite good, but not as addictive as 1-st game. The reasons are: lack of research strategy and terrible story.
Anyway, I give that submission 10\10, cause the lack of the work is great, and it surely compensates the little rotting parts.
PS. Probably you get your submission blamed, cause ppl try to compare it with the first one. It is not as addictive as first, and it have surely much worse gameplay, than it was in the first.