colobot
plan B: On Crystalium: Viruses - No clear goal for the mission
From Mission Control (F1):
Build a radar on the highest point in the area. Make sure that the radar will work safely even after your departure to other planets. Your research center should be able to provide a solution. It is possible that the organisms detected are in fact the worms alluded to by the first expedition. If this is indeed the case, don't be excessively alarmed: they seem fairly harmless to living organisms but could cause the programs of bots and buildings to malfunction through the emission of viruses. Radars not only give you precious information about objects and organisms present in the region, they also relay information to and from the Earth once you have taken off to other planets. It is highly probable that problems with the radar stations built by the first expedition caused the transmission problems that we are aware of. In order to help you with the boring task of gathering the necessary raw material, we have developed a program that instructs the wheeled grabber to look for titanium ore on its own (see the programming page 5). F1 allows you to review these instructions at all times on your personal SatCom ?
The instruction doesn't say anything about the goal. What the player is expected to achieve here?
Building a radar on the highest hill (with worms) isn't counted as the completed goal. The player may also build a defence tower there or try another way to eliminate worms, but this isn't obvious from the description.
It says "Your research center should be able to provide a solution.". In the research center, the only new thing is the watch tower. This implies that you should use that as the weapon to destroy the worms.
They don't give the exact steps to do it, they just allude to differenthinted proccesses that you will have to perform, this makes it slightly more challenging and more interesting. Although some levels like the Tropica one where you have to find the shooter are almost too obscure.