A tip for the last level: build the natural gas first, along with the lab. Then make the geothermal and go developing it (I only fully developed it on the 3rd or so night, though)
There´s a bug in the level with the big drop and the two weels, where you start in the top-right and end in the bottom-left.
Well, for the but to happen I had to do the 2 anomalies bug first. Then, I go to the end of the level.
I make one anomaly going up, above the portal (to it's right, actually, the circle may go off the edge a bit)
Then I make another anomally on the edge, going to the left and up. I go walking on the ceiling, and when I get near the edge (when I mean edge, I mean the edge between the ceileing and the wall) very slowly.
Somehow, I get inside the wall, and a couple seconds later I fall into the portal, from the ceiling above it. I see a couple white stuff inside the wall when I'm there...
 "Time Kufc"){kind=icon}
 "Max Damage"){kind=icon}
 "Boombot 2"){kind=icon}
 "Dungeon Defender"){kind=icon}
 "Super Energy Apocalypse"){kind=icon}
 "Boxhead: The Zombie Wars"){kind=icon}
 "Fancy Pants Adventure: World 2"){kind=icon}
 "Fold"){kind=icon}
 "Manifold"){kind=icon}