The last boss, the lord of hell only does the earthquake if you have a lot of ground units, use flying units and he won't use his ground pound. 2 angels+2 titans= win. As simple as that.
You get scared by a fake bear waving his arms around, most likely just trying to say hi in its own way, Instead of leaving the house, you scream and run around the bear for a while, then you go upstairs, still not leaving the house, and jump out the window to your doom. Still could have easily been avoided by just walking out the door. 5/5 btw.
( TiP ) get the white tiger, it may seem like a drag, but unlike the golem it moves and attacks fast. Once it dies, it will keep coming back fast, so its pretty useful for the extra stages.