Troglos and Giants
The Troglodytes and the Hill Giants are defeated together. This is where thing get complicated.
The Troglodytes
The city of Sharimik is ruled by a Triad. You need each of thier permition to start this quest. One of them will require a bribe. The captain of the guard will only give you permition if you complete a mission for him. You're going to have to get the spell 'ritual-sanctify' The only place you can get it is from a hermit in a valey on the north side of a mountain to the East of Lorelei. It takes 50 spell points, and there are two altars. My advice is to destroy one, leave, rest, and destroy the other. The first altar is obvious. Fight the Hordlings, and find the secret passage to the south in the room that shoots fireballs. After you destroy the altar, you will fight a Haakai and two guardians. Make sure you're ready. Once you have everyone's permision, the mayor will give you a diplonatic scroll for the Troglo king. You will be blindfolded and locked in a cell. Read the scroll and you will see the king. You can accept his mission and kill Elhioc or fight your way out. In the dungeon, Go East, than North than West. Elhioc is beyond the machinery. The combination to the lock is 543202. The secret passage to Ehlioc's chambers is on the west wall. When you're done, return to the cell and exit through a secret passage to the South.
The Giants
Start by entering the Giant's Forge. It is near Delsan. Go through it to the Southeast. Go downstairs. A little to the North of there is a few Nagas. Kill them and take the key. Use it in the middle of the map where the Shamans are. At the pillar, keep pressing buttons untill it shows all of the names. Past the door is a map to the concealed tunnel where the barriers between the Troglos and the Hill Giants are. In the third cave, there are some hostages and stolen items. To rescue the hostages you must find the secret exit (It is to the southeast.) Now it's time for the tough part. The Concealed tunnel In the first room you have to push barrels into water or pits. Some of them are beyond secret passages. Look around and you'll find them eventualy. There're no monsters here. The next area has moving blocks. Be careful! Enter the secret passage a little up from the bottom at the west end. After passing a long hallway with blocks, you enter a room with lots of big blocks. There are undead here. Flip the switch on the east part (I hope.) and go through the portcullis and find a secret passage. The lever is there. Now time for a tough battle. The doomguard will split in two everytime you hit it. My advice: Send your toughest character past the doomguard and smash the crystal. Get out of there unless ytou want to be caught in the middle of a huge battle. Congradulations. (Don't forget to pick up the pieces of the crystal)