2-9 is downright impossible. You need multiple bombs, but they reload so slow. you go through 2 massive waves and a final 3rd wave of like 12 witches and 20 dolls. It's just an unreasonable way to keep you playing the game over and over again.
The clearance is very simple. The biggest problem is the lack of a shovel. The problem I encountered was that I eliminated the last monster but did not have the option for the next level
Position your farmers in front of the witches to use as light tanks to absorb their Charm spells as they spawn, and place mines on a tile behind them to kill them after the H-scene. You should have at least 6 farmers on the field before the first rush. They are the key.
