Sea's Revenge Demo Version is a standard hero defense with the ability to customize your hero.
While I can understand the collision of doodads being a hindrance in a map like this, the tiles were oddly placed. This mainly concerns the tiles under the shallow water. The details about the heroes weren't really informative at all. I was told my hero had "medium damage". I thought medium damage would be 25-30, while it was in fact less than 10.
I recommend increasing the maximum level of all the abilities. After the 11th wave I had all my skills max level, and not much use for lumber. Also, some abilities were definitely more powerful than others. I'd consider life regeneration weak compared to most of the other passives such as critical strike and vampiric aura. The waves also lacked variety. It would have been much more entertaining to fight creeps that had abilities.
Recommendations:
Find a use for late-game lumber (increase the maximum number of skill, raise the level of skills, etc..).
Improve the terrain. Make a path from the water to the fountain, and use a different underwater tile.
Balance the abilities. It's not a serious issue, but some abilities are neglected much, much more than others.
Rating: 2.3 and recommended for approval.