The general idea is good but how you`ve done it so far is horrible. The terrain is horrible, the towers doesn`t attack, only 3 units with 1 evolution. Same with items. When you want to open one gate both of them opens. Attackers doesn`t have skills what makes the map just boring after some time - the same waves again and again... And generally it`s way too easy.
Like for now the map can get max 1/5. Work at this map coz it has a little bit of potential.