This is basically some encounter suggestions for the game. These guys would make it much harder

Eastern Soldier CR 2
M Human Warrior 3
AL (Any) Medium Humanoid
Init +0; Senses Listen +0, Spot +0
Languages Common
AC 16, touch 10, flat-footed 16 (+6 armor)
hp 16 (3 HD)
Fort +4, Ref +1, Will +1 (Class F+3, R+1, W+1; Con +1)
Spd 20 ft.
Melee Glaive +6 (1d8+1/x3) (+3 BAB, +1 Str, +1 Weapon Quality, +1 Weapon Focus Feat) (reach weapon)
[Space 5×5 ft; Reach 5 ft (10ft with reach weapon)]
Base Atk +3 ( +3 Class); Grp +4
[Atk Options Reckless Offense]
Combat Gear Splint Mail (Lamellar Armor) , MW Glaive,
Abilities Str 13, Dex 11, Con 12, Int 9, Wis 10, Cha 8
Feats Power Attack 1st level, Reckless Offense 1 level (Human Bonus Feat), Weapon Focus (Glaive) level 3.
Skills Profession Soldier +6, Intimidate +5.
Possessions Splint Mail (Lamellar Armor) , MW Glaive, and about other stuff worth a total less than 2,500gp.
Skills (class): Profession (Soldier) 6 ranks, Intimidate 6 ranks (-1 ability score).
General Tactics:
– Get as Many Support Buffs as possible (ex. Bless, Haste, Marshal’s Aura, etc.)
– Swarm and flank lone targets with reach.

Reckless Offense + Charge + Power Attack:
Atk +7 Glaive (1d10+7/x3; Ave 12-13dmg).
AC 10, touch 4, flat-footed 10 (+6 armor, -6 penalty)
NB. Reckless Offense is for all attacks until the next turn. Which includes AoO.

Typically this is with a Mid level (5th lvl) Tough Cleric protected with probably Extended Sanctuary (DC13)
with the following buffs on the group: Bless, and Prayer, a Very Tough Bard, with inspire courage w/ song from the heart, Lingering Song, Inspirational Boost (+3 morale to attack and damage), and a Wand of Haste of 5 charges (1,125gp) DC20 to use the wand anyway, or a really really tough wizard.