If you want a chain fighter that's strong, ignore all the tripping nonsense. Tripping is useful in a group to control the battle, but I know you're looking for something to inspire true fear in your party, right..?
So we want a goliath (+1 LA) that's 6/1/2 fighter/barb/crusader. Take the dungeonscape "dungeoncrasher" fighter alternative, knockback feat, spiked chain feat (duh), combat reflexes, barbarian alternative feature for pounce, shock trooper. Maybe improved initiative so you can get a high initiative and ensure a charge. Not like you won't have a crapload of feats from fighter. Oh and feel free to take whirlwind frenzy rage variant from unearthed arcana for one extra attack.
With dungeoncrasher and knockback, you're bullrushing them into walls/trees/etc (direct the bullrush to a wall perfectly with shocktrooper), and causing weapon damage plus 8d6 + 3 x str. With pounce from barbarian and the ridiculous reach of a large spiked chain, you should be able to charge and slam a low str/AC character into the wall a few times... If you manage to slam them 3 times on the charge, just with dungeoncrasher alone you'd cause 24d6 + 9 x str. Don't forget to use heedless charge from shock trooper to keep your attack high even while power attacking for the full 10 BAB.
Anyways, on top of all this, you added crusader for a reason. You'll be able to grab thicket of blades stance at crusader 2, so if someone even tries to make a 5 foot step adjustment within your considerable threat range, you're slamming them in the face.
If you fear casters, feel free to add in the feat mage slayer, so that all the casters in your threat range can't cast defensively too.
Anyways, be careful with that build, because if you focus on one PC you're gonna drop them. If the goliath has a buddy like a cleric or wizard that can buff him up, it gets even more ridiculous.
Have fun with the goliath face hunter.