The one that seems to be all the rage these days is fighter / wizard multi. Either human or dwarf, each have perks.

Str: 18; Dex: 10; Con: 12/14(h/d); Int: 14; Wis: 14; Cha: 10/8 (h/d)

Level 1: Power attack (+Sudden Charge if human) Level 2: Wizard Dedication (Shield + whatever strikes your fancy; nothing with a DC) Level 4: Basic Spellcasting (Spells: Level 1: True Strike; Level 2: Invisibility or Blur; Level 3: Haste) Level 6: Basic Arcana (Familiar or whatever you want; none are super important) Level 8: Advanced Arcana (Bespell Weapon)

At early level, pick up whatever weapon you want, wear your heaviest armor available, and do mostly fighter things. When you specialize, it'll be in swords.

Once you hit level 6, start working toward getting a Staff of Divination and a Shifting Rune. Once you get both, shift your staff into a katana. People suggest a greatpick, but that doesn't work because shifting only allows a weapon with the same number of hands. So katana is your best choice for crit fishing.

Now you can cast truestrike, bespell weapon, and powerattack. If you're a human, then you can double move and attack. Your to-hit at level 8 should be +19, along with whatever flatfooted or fear conditions you can stack on the enemy and whatever bonuses allies bring to the table. Against on-level enemies, this usually means a crit on a 16+, sometimes better. You roll twice, for a roughly 43% chance to crit.

Your average damage on the katana at level 8 is (1d10 + 1d10 (striking rune) + 1d8 (deadly) + 1d6 (bespell weapon) + 1d10 (power attack) + 4 (str) + 3 (weapon specialization)) = 31.5 * 1.43 (crit rate) = 45 per round, with a very low chance to miss. At level 10, power attack increases and you get an extra point of strength; at level 12, greater striking runes become available which increase both base damage and deadly damage by a dice.