Str high, Dex 14, Int 14, Con 16, Wis and Cha low. Human is best, but consider Dwarf, Wood Elf.
Ranger2/Fighter the rest of the way.
Choose Ranger at level 1 for more skill points. Choose Two-Weapon Fighting, Ranger style. This gives you the flexibilty to use TWF vs. low AC targets or when you have big bonuses (bard or other spellcaster often buffs up your party). Taking TWF as a Ranger style means your Dex doesn't need to be really high (just 13 for Dodge).
Take the Greater Weapon Specialization tree for fighter feats.
TWF and Improved Trip together give you a lot of opportunities to knock down your foes.
Since you won't have a shield, you'll get hit a lot. Take Improved Toughness.
Power Attack is a must-have feat for any wielder of a two-handed weapon. Use it when you can't use TWF or when bashing through hardness or DR. Use it vs. prone opponents or with Defensive Strike.
1: Rgr1 - Combat Expertise, Improved Trip, Track
2: Rgr2 - TWF style
3: Ftr1 - Dodge, Wpn Focus (QStaff)
4: Ftr2 - Power Attack
5: Ftr3
6: Ftr4 - Improved Toughness, Wpn Spec (QStaff)
7: Ftr5
8: Ftr6 - Quick Staff
9: Ftr7 - Defensive Strike
10: Ftr8 - Gtr Wpn Focus (QStaff)
11+: Ftr...
Take cross-class ranks in Tumble so your Total Defense AC gets a bump. Max out your Survival ranks, too.
Enhance your darkwood quarterstaff to +1 Shocking, Flaming, Frost. Rely on your spellcasting buddies for Greater Magic Weapon, Spikes spells.
Get an animated shield, Boots of Speed, Belt of Giant Strength, Ring of Spell Storing (Enlarge Person, Reduce Person, True Strike, Alter Self [to troglodyte], Barkskin). Get a +1 bow and a +1 adamantine Ghost Touch greatsword.
Enlarge Person gives you reach, strength. Reduce Person gives you dex, AC.
If you go Wood Elf, buy 14 Int, reduced to 12 from race, then bump it up at character level 4. Re-order feats since you need 13 Int for Combat Expertise. Dump one feat.
1: Rgr1 - Wpn Focus (QStaff), Track
2: Rgr2 - TWF style
3: Ftr1 - Dodge, Improved Toughness
4: Ftr2 - Combat Expertise
5: Ftr3
6: Ftr4 - Improved Trip, Wpn Spec (QStaff)
7: Ftr5
8: Ftr6 - Quick Staff
9: Ftr7 - Defensive Strike
10: Ftr8 - Gtr Wpn Focus (QStaff)
11+: Ftr...