I had to beat the boss skeleton 5 times to get the hard badge. Supposedly you can work around it but I kept hitting it even after the times I beat it. Ended up losing by one hit on the last week, took a chance and refreshed page before progress was saved and I was able to redo it.
Please add a button to lower the quality of the game. I have to keep resetting it with right click every time I launch or I can't see a thing that's going on.
boost for as long as possible before hitting helmet, then speed on straight up until you hit birds and slow down. Focus on money and speed boost upgrades, energy is almost useless. And the enemy bird reducing upgrade.
Oh God. Just spent about 8 hours on a single endurance battle, finally figured out the whole lime+orange combo. Got 3.6 million points, leveled up from about 360 to 418, and created a few thousand invincible opponents around wave 530 just to wrap things up and just called waves untl I finally died. Still beat wave 831 before the increasing banishment cost finally did something.
Lasted 1:31:17 on survival. Would have gone longer but I had to plug my computer in before it died and fumbled just long enough for them to finish their temple. Blades, confusion, earthquake most important by far. Fighting enemies don't build as fast, so you can just use confusion to make them kill of builders, hit earthquake to undo progress on the pyramid, and use blades frequently to kill of concentrations. Mana stealers screw this up a little, but not much. Does anyone know if there is an end to that? Seemed to be a level counter with only enough room for two digits, but I died on 98...
I enjoy these games, but I have to agree that they should make it possible to play at a faster speed. Also, if I use the WASD buttons to scroll, I get stuck on the right side of the screen (this has happened to me on multiple computers). Agree with ChaoticWerewolf that upgrading desperately needs to be streamlined and that level 5 is a pain- I died on the last level with about 10 enemies left on the screen- why??!
 "My Pet Protector"){kind=icon}
 "Flying Cookie Quest"){kind=icon}
 "Up in the Sky"){kind=icon}
 "GemCraft Labyrinth"){kind=icon}
 "Cat God vs Sun King"){kind=icon}
 "Mushroom Revolution"){kind=icon}