Fun web RTS! But there are small problems
I like the achievements, the heroes, and the meteor spells. Destroying the houses and garrisons was pretty satisfying! The resurrecting powers of the Banshee and the zombie infection were also fun elements.
There's a problem with the massacre achievements. On many of the later levels (from third land area onwards) it is impossible to complete the massacre achievements, because the towns run out of people. Even when every building is left standing, the whole population dries up way before you can get the achievement. There doesn't appear to be a way of stopping this from happening, so I think there must be a programming error.
The last level won't let you save after you've completed it, so each time you complete it, and load your game again, it's as if you didn't play the level at all. Please fix this.
I feel like there should be a "deselect troops" option, so that I'm not sending my troops in the direction of where I've just decided to cast a spell, or so I can send just a portion of my troops, not all of them. The only way to deselect my troops was actually clicking the "spell" button, but if you're already on the spell screen, a user wouldn't think to do that.
Last thing, when you're upgrading the meteor spell, the area of influence grows larger, but since each meteor comes one after the other and land in random spots around the area of influence, this has the effect of making the spell less accurate, which is the exact opposite of what should be happening when you upgrade it.
Thanks for a fun game, and I hope these few problems can be fixed in further versions or sequels that might be made.