a few things:
1. like everyone else, my badges aren't working
2. engineering tree seems under powered compared to rest - might be fixed from others suggestion in how to obtain gold
3. destroyer with rocket + rocket tower has so far gotten me perfect on challenge mode very easily (either that or garden levels are just easier than rest). On a few of the levels I had hundreds of gold in stock I didn't even bother using.
4. Overall this is a great game. I enjoyed it and will continue playing. I would like to see a speed up during the waves or allow us to advance waves even before the last guy is dead (perks or no perks)
Senretsu's comment on ending would make sense if the pichin waking up was evolved...but it was the basic pichin which makes me interpret the ending as his "evolution" was all a dream!
refreshing the level made the ruby appear. second time around was much faster and it only happened on one level so no biggy :)
on another note, did anyone else notice the color of the "heros" hands at the end?
On the desert level with the rocks going up, the red crystal disappeared for me...I have a screen shot if you need it, but I wasn't able to end the level without quitting.
the freeze time and build is too easily exploitable...but then again it also seems to be the only way to beat the game. example of how I used it - survival levels, all boss have the ability to turn towers to cheese (or even the one that destroys towers). But they don't seem to do that until they get to the top of a stack of towers. Therefore when they are near the top freeze the game, sell all towers on that stack and place them a row over (if you don't already have towers there). Then nothing gets turned into cheese or gets destroyed and they start at the bottom all over again...
Using the above trick, I beat survival with only cannon towers, boost towers (only 1 on very bottom of each stack) and the occasional eye tower to see the "invis".
bubble and stone wall seems very useless. walls need a timer to show when they will disappear, or have them blink slowly then faster to indicate they will be gone. fireball goes after dead flying goblins that are dropping from the sky...that should be fixed.
So there are floating fuel, balloons that pop your ...space ship into outter space, and music notes that boost your speed, but there aren't any health packs floating around?