Incredible game concept when you find out how to play it. Your general goal is to place buildings, some specific types next to each other to get bonuses and new objects to place on the map in battle.
It's tedious to understand because there is a lot to take in, but it's really self-explanatory. Just hover over shit and you'll see a description. You'll see the AOE of objects you place, what element they are, and what element triggers them. Use your cell-phone mid round to place more and cheese enemies by directing the heroine to face a certain direction.
Your goal is simply to catch as many bad guys in a dastardly chain reaction of AOEs as you can, paying attention to placement and element, and to a lesser extent, the enemy's elemental weaknesses.
This is very fun. Although, saying that it's hard to understand is a valid criticism, but saying it's bad because of that? Nah.