Arena with a randomly chosen wall type:
Fence – 1HP
Palisade – 250HP
Fortified Palisade – 500HP
Stone – 900HP
Aqueduct – 1600HP
Fortified Stone – 3000HP
City Wall – 3200HP
Gates for nonstandard walls are always palisade gates in the HD Edition.
In the CD version of the game, they are always stone gates.
If you play with the basegame data, you will only get walls that are available in the basegame (palisade, stone, fortified, and the city wall with bugged shadows).