I found a bug in the game. When the yellow bombs explode, sometimes chunks of the bomb will fly really high. Sometimes, I'll die and start a new game and suddenly a bomb chunk from the last game drops down from the sky.
Make it so you have at least a fraction of a second to predict what is going to happen. Maybe change the colors of the wall right before the blocks shoot at you or make the wall slowly nudge forward then fly at you?
This game hates me I think. I just got 598 seconds and a similar thing happened to me on Particles with 197 seconds. Nobody must want me to get any badges around here... O_O?
If you place towers close to each other and max out their damage, you'll make combos. That makes way more than just 4 ways to kill the enemies. A full combo list is found at http://onslaught.playr.co.uk/about.combos.html
I played the first one from i-am-bored.com, and this one is even better! The combo firing towers are very cool and now I know how to make the combo I want come out because of the tutorial.
This needs a save feature and you should be able to try a level again if you lose. That would make this game more fun for me. At first, I was very confused about the bonuses. I kept thinking 'what the heck is a harmonic double swimming pool?' Maybe you could be a little more clear on what they mean. Also, starting around the middle of the game, it got very repetitive and boring. Maybe you could add a little more variety to the later levels. Overall, it's a good game.
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