Imagine a dwarven city, a fairly backwater one, completely unlike the likes of Erebor or Moria. This one scrapes together barely, and is only as large as it needs to be, which is to say 5 feet tall tunnels and hallways all around, and tonnes and tonnes of dirt and rock around.
The city is then now under assault by some glorious 8 feet tall giant humanoids. They can't fit inside. How might they try to assault the dwarves?
- The dwarves have a complex water system sourced from even deeper underground.
- The dwarves have a large dwarven made cavern deeper underground which is where they have most of their food production
- The dwarves are adept at detecting mining efforts by the invaders and can effortlessly collapse any tunnel the attackers attempt to create.
- The setting has renaissance era technology and simple magics
How might these large attackers get into and attack the city? Suppose that they are there for the McGuffin stored in the most secured part of the dwarven city.