Verbose
Deity
The armour primarily involved in stopping arrrows was the padding, which made up quite a lot of the European armour. There tends to be a lot of emphasis on the metal carapace created, and then the crucial role of padding in Medieval armour often gets ignored.But it does not mean that those "human hedgehogs" were totally unharmed.
Most likely - they had a number of more or less serious wounds all over their body, because some of those arrows certainly reached their skin and flesh. However - penetration was not deep enough to kill them, considering that they were still moving. And many arrows probably didn't even reach their skin.
