Fortified spike wall

[Bolgfred]

As the title almost suggests I think about a wall, armed with spiked on one side. Whenever someone attacks this wall in melee, it gives a chance to damage the attacker. The Damage should be small, to not downing an attacker within seconds. For the AI it should be more or a warning, as they tend to prefer attacking walls without spikes/doors.


For the numbers I think about something like this:

Retaliation: 25% dealing 5 sharp damage to attacker
Min. construction: 8
Hitpoints: 1,5x wall
Construction time: 3x wall
Cost: 5x wall
Materials: Wood/Steel/Plasteel