aronzei: "3. THE ANNOYING LINK ON THE BOTTOM. I KEPT ON MISCLICKING IT WHILE DOING QUICK DOWNWARD JUMPS." (Just to emphasize it, so that no developer EVER, EVER does that again..)
Protip: Peon Tower - Electric Floor - Peon Tower and so on & upgrade EVERY Tower, privileging those in the middle. Once too much money: Replace Towers in the middle with Boss Towers & UPGRADE.
Boring because of 1. Always same enemy type (and -speed and -behaviour), 2. No models, no sense in trying to figure out in which direction my character is oriented and 3. You just end up watching the radar, wildly shooting and in if in need, walking (or running) backwards. Suggestions: 1. Enemies with various HP (shots to kill), speed and chasing types, 2. MODELS (or at least colors), 3. Limited shots per round, stamina bar, less accurate radar.