New enemy weapons: Battering rams, trolls can now carry giant pickaxes and blocks for building New enemy behaviours: Enemy behaviour is now classified into different roles (charge, hang back, ambush) and can path around dangerous areas. Engineers can build floors and stairs. Enemies can break through fortifications and raised bridges. They can also dig underground through natural walls. Goblins also bring more kinds of mounts and their demonic leader New weapon: Bolt thrower. This is a siege engine with a fixed location but can be turned freely in any direction. It fires faster than a crossbow and the ammo bin can hold 100 bolts. Siege operator skill matters but unskilled operators can use it more effectively than they use hand-held weapons. Reworked weapons: Ballistas and catapults are more effective Changes to traps: Goblins can rescue caged allies. Water and magma traps will not be as effective as before, so you’ll have to try a variety of defensive tools instead of relying just on one, to properly protect your forts.