The first DLC for Orcs Must Die! 2 is on the way and it is up to you to decide if it worth $5. Fire and Water is focused all around fire and water elementals, who both break down into smaller enemies like earth elementals, but not in the same ways. Fire elementals start huge and once you destroy their largest form they will turn into a bunch of exploding little hell raisers, while water elementals turn into puddles of waters, which don't do anything on their own, but if a waterling finds the puddles then they can use that to grow into a water elemental or water lord. These are the only two new enemies in this pack, but there are three new traps, three new endless levels and three new story levels, all of which can be played cooperatively or alone.

The new traps!
The Web Spinner: Slows down enemies passing through a hallway with a tangle of webs. Similar to the tar trap, except it has a wider area of effect.

Ceiling Darts: They drop from the ceiling and hit enemies in every direction, sounds useful, but only great against groups.

Web Spinner on the right and Ceiling Trap on the left.

The Floor Portal: This trap sounds a little overpowered and must have some untold restrictions, but if an enemy steps on it they are sent back to the beginning of the level.