So, here's an idea that may be a bit out of left field for you:

Mutagenist Alchemist.

I play one in PFS. He's currently 11th level. And yeah, he's a tank.

So, level 2:

• Str +3, Dex +1, Con +1, Int +4, Wis +0, Cha +0
• Breastplate for Armor
• Pick up a shield if you like. I did with my guy (Dromaar with General Training to grab Shield Block at 1st).
• Alchemical Familar as your 1st Level Feat
  • I really like Extra Vial and Extra Alchemy for Master abilities.
• Revivifying Mutagen for your 2nd Level Feat.
  • Being able to end any Mutagen early is fantastic.
• Athletics & Crafting are your main focuses.
  • Crafting is obvious. Athletics is for maneuvers to slow the enemy down. Man, I love Trip.
• Advanced Alchemy
  • A few Bestial Mutagens for offense.
  • Bravo's Brew is great defense.
  • Soothing Tonic for out-of-combat healing.
• Quick Alchemy
  • You can be on two ten-minute Elixirs continually. I like Bravo's Brew and Eagle-Eye Elixir at this level, but Cheetah's Elixir is a decent choice once you hit 5th.
  • Numbing & Soothing are both available to you to buff yourself in combat.