I thought of similiar:
Level 30 (4 420 577 xp)
Strength: 3
Agility: 36
Hit points: 38
Skills to attributes: 8
Ironflesh: 0
Power Strike: 0
Shield: 12
Athletics: 11
Riding: 0
Horse Archery: 0
Power Draw: 0
Power Throw: 0
Weapon Master: 0
One Handed: 1
Two Handed: 1
Polearm: 111
Archery: 1
Crossbow: 1
Throwing: 1
The difference is that here you have 11 (!!!) athletics, which lets you use different shields for different purposes. 12 * 8% dmg reduction = 96, so for unbreakable shield just simply take Steel Shield. For more (much more) manouverability but less forcefield - buckler, the stronger one, probably - would let me just step in and distract enemy when he duels with my teammates, or a "suicide" charge at enemies with shield up to gain enemies attention while my team is flanking etc.
But no unbreakable shield - only "almost" unbreakable one, Steel Shield.
While this one has more athletics, the Steel Shield would be too heavy to wear all time and if you have 13 shield, you can even bring the cheapest shield with you for the purpose of blocking. Blocking. BLOCKING. ALL. THE. TIME. FUCKIN. BLOCKING. WITH. CHEATS!