Elder Ice Elemental (Large Elemental Walker/Burrower — 153 XP): Str 20, Dex 8, Con 18, Int 6, Wis 10, Cha 10; SZ L (2×2, Reach 2); Spd 30 ft. ground, 20 ft. burrow; Init III; Atk V; Def VII; Resilience VI; Health VII; Comp II; Skills: Athletics VI, Search II; Qualities: achilles heel (heat), battering, charge attack, damage immunity (cold), damage reduction 3, darkvision II, everlasting, grueling combatant, improved stability, lumbering, monstrous defense II, tough II, veteran II
Attacks/Weapons: Slam IV (dmg 2d8+5 lethal; threat 18-20; upgrades: AP 4), Snow Drifts (slowing attack III: 30 ft. aura; Fort DC 20 or become slowed for 3d6 rounds), Cold Snap (cold damage attack III: 40 ft. aura; dmg 1d6 cold per 2 TL, Ref DC 15 for 1/2 damage); damage type: cold)
Others to come, but I'm getting this one down to see if people like what I'm doing. It's mostly an Elder Earth Elemental with a few tweaks to allow the Cold Snap to fit into 150 XP. EDIT: Unfortunately I forgot damage immunity (cold) and now could use some advice on how to lose 3 XP.