There are some broken aspects to the game: that cage traps can catch just about everything and that all walls are impenetrable to invaders are two of the most o

There are some broken aspects to the game: that cage traps can catch just about everything and that all walls are impenetrable to invaders are two of the most obvious. If you abuse these, it is not hard to make the game too easy. You can always just embark in more challenging areas so that you don't have the luxury of preparing a nice impenetrable fort for your first wave of hostiles...