bamboocat, first you click on the pad holding the hedgehog and pull it down as far as possible. Then you release. Press the left and right arrows to steer him towards paddles and coins. You'll earn money from that, which you use at the upgrade screen. Each upgrade has instructions at the bottom for how to use it. Do you have any specific questions for how to do something?
Dagorath, here's a tip for level 18. See the glass block at the bottom of the screen? You'll need to double turn to work your way to it. Then you'll need to move around it before it finishes breaking. From there you can fall off and reach the chip.
znookey, those rocks that are on the bottom of the screen at the beginning? You need to get on those. Then fall off them, push towards the chip, flip the screen upside down, then push more towards the chip to land safely on the rocks.
slashbat, the key to level 8 is that you can fall off something, then do a move in mid-air. Now if someone can give me some help for level 18, I'd appreciate it.
I'm not going to make massive changes, however, I have decided to make a few small tweaks in the next few days. I'm going to add on option not to show cutscenes, I'll increase the nuke cost a little, and I'll decrease the damage that the nuke does against bosses. How's that sound?
Upgrading requires putting a unit into the circle of rocks, then putting a bunch of peasants in with him. It's not a good system, I would have changed it if I'd had more time. I think the lesson in this is not to try and make something as complex as a tower defense game in three weeks. I'm planning on a more sensible upgrade system in the sequel.
There are some significant balance problems for this game. When the last wave is much harder than all the preceeding waves, you've basically wasted your time by playing a level that you couldn't win. I've lost on the last wave despite having everything upgraded fully. There's just nothing you can do in that situation. Since you can't revisit earlier maps, there's also no way to make more money and get a different setup that might work.
There's a lot of vagueness in this. Places where it says "Select the fame," but it doesn't say which frame and it doesn't always seem to mean the new one we just added. Sometimes it shows things happening, like selecting the tween type, that it doesn't describe in the steps.