This was a nice game to waste a few hours. The shortness of it kept a good balance with the repetitiveness. The graphics, music and overall feel was nice.
I found some downsides to it though. It was easy. It was easy to farm early levels to upgrade your cannon. The spells where a nice touch but un needed with the difficulty. Everything was easy to upgrade and could be done quickly.
I found it annoying that the Level limit was 99, yet you still needed 56 medals (or 6 level ups) to fully upgrade everything. Also that there was no way to replace/sell already set traps.
Being said this game was enjoyable. Also 'The Big Guns' and 'Finders Keepers' didn't unlock for me