We had a fight against goblins turn against us last weekend, ending up with a PC incapacitated. But after that they were simply unable to do him any further harm due to their spear's Deadliness of 3. He received maybe a dozen crits but he managed to reduce them to a Close Call every round. His clothes got damaged, then destroyed but he was otherwise fine, he just took calming breaths for 3 rounds until he was able to attack again.
Did we miss something that would have made successive crits worse or was it a correct interpretation of the rules?