When the hero is injured in films it seems not to affect their combat ability. Think Die hard : Feet cut to shreds, severe blood loss etc but still able to keep going until limping out at the end.
OK losing an arm should mean you can't use both a shield and sword but, maybe, you can up the stats on the remaining arm under the covers. Maybe have the character find a special 'sword of one-handedness+1' if they have a limb detached.
I also like the augmentation idea.
Limping from the pit is one-thing. Limping from the pit half-human due to augmentations is quite poignant.