Suprising amount of depth. The game seems simple and requiring no skill at first, but a lot of thought and planning goes into the later levels. There is a bug like PsyBomb said where it doesn't always catch combos.
Using the mouse as an input makes this more a game about struggling to make the mouse work rather than one having a "puzzle" element. Level editor is always a welcome addition.
Well executed, interesting and meaningful game. I was put off at first by the narration, but it grew on me. I'd like to be able to view the cinematics again. A memorable 20 minutes is better spent time than the forgetable hours I've spent on lesser but longer games.
I played all the way through the first one and half way through this one and I'm not sure why. The game has not improved as I'd hoped. It is NOT fun to hold down firing your turret for 10 minutes until your mana is maxxed then send a flood of enemies. You need to figure out how to make it require more than just arrows to survive and mana regen/max mana to be the game winner. I'd suggest gimping the arrows for starters, so that you always have to send some token army out.
Controls are too sensitive still. The collision detection is too wide - I've run into boats that aren't even on the screen anymore because I've passed them. Overall it's pretty frustrating to be constantly uncontrollably running into things.