You can already see a few examples of this in the list, but if you think about it, just about every goal can be
mirrored. Take Stop the Ritual and Hold the Line for example. Be mindful of this when looking through the list.
Eventually I'll include all the mirrored goals in the list as well.
The most interesting encounters arise when you start combining different goals. For example,
protecting an NPC while a magical ballista is shooting at the players (and the NPC!) is an example of combining
Prevent Enemies from Killing the NPC and Disable the Device. The more of these goals you insert into an encounter,
the less important the objective of "killing all the enemies on the battlefield" becomes. In the thread that's the
inspiration for this one, there are some great examples of memorable encounters where the DM combined several
goals. Some even got to the point where most players were not even fighting the enemies anymore because
accomplishing the goals was much more important! If you manage to achieve this as a DM, you have truly taken your
game to the next level.