Hi Gatchou,
You probably saw a screenshot i posted while being bored in a thread regarding DP scores on some server.
Anyway, getting A rank is pretty easy. Here's a short summary:
1] Go from the entrance, take a right to the tree, avoid mobs go towards the path and cross the stream. You can cross the stream the easiest on the right side of the path next to the ruin, but don't agro the invisible mob at the tree. You don't have to kill anything at all before this point.
2] Kill the patrolling mobs and the stationary packs before spiritmaster atmach. Then kill atmach. Kill the incoming adds after atmach dies. Wait for more adds until the Kurinark arrives - he gives nice points.
3] Continue down the path and take a left along the stream and back up right before the bog bosses. Kill the stationary packs and the patrols along the water bank. Kill the invisible at the right tree.
4] Decide who kills which boosters, engage and kill the first bog boss. You can split the job between 3 people or have 1 do it himself (assasin f ex). How you do it doesn't matter, as long as they die very fast. Boosters killed fast = boss killed fast.
5] Continue from the now dead bog boss ahead and to the left along the water bank. Kill the mobs towards the ruin, the defender patrols after the ruin and the patrolling ranger. Then go towards the captain where the defenders were patrolling and kill him and the ranger next to him.
6] Backtrack and kill the second bog boss
7] Turn around and go back towards where you killed a captain before the bog boss, but this time instead head up the small trail and kill the captain at the tree. Then turn right and go to the hillside and pull the patrol next to the next captain (not the patrol on the path now behind you). After the patrol pull and kill the captain. You can pull him ranged without the mobs around him agroing.
8] When he is dead go down to the trail, follow it a little, head right up and behind the tree there. Kill the invisible mob. Head further down and kill the stationary pack next to the 3rd bog boss booster at the corner. Ranged pull the mob behind the fallen tree. Head left up the path and then right. Pull and kill the captain there
9] Head back down towards the 3rd bog boss but dont engange him. Kill the mobs at the tree, the ruin and the last solo ranger mob.
10] Again, decide who kills which boosters. This time though, make sure the attack booster dies very very fast or this bog boss will hurt a lot.
11] When the 3rd bog boss is dead, head out of the area and into the next along the left wall. Don't agro the patrol on the big road. Turn left along the small trail and kill the patrol. Go a little further down this trail and to the right. Kill the first ghost captain. You can pull it, you dont have to kill all the mobs around it.
12] Now turn left and clear a path towards the next captain. He will be between a large tree and the wall to your left. When he is dead turn right, walk under the broken tree and towards the wall "corner".
13] At this point have someone in your party see invisible and look for the first tree boss. If he is not up, then go along the wall left (the wall should be on your right side) and kill the arcanist and a few invisible mobs, pull and kill the captain there.
14] Go back to the spot where you first scouted for the tree boss. Find him and pull him to that wall corner at step 13. Kill him. Remember to be careful about his aoe's, especially deep grudge wound. Remember the group snare and explosion at 25%. When that happens have the group run in the direction you came from (cleared from mobs) and have the tank keep him at the tank spot. Wait for grudge explosion to happen, run back, and kill him.
15] Turn right (east) towards the road. Cross the road and find the arcanist ghost captain behind a tree. Kill him. Turn left and run along the small hills towads another tree in a corner. Kill the melee based ghost captain there.
16] Glide down the small hill and follow the road north. Try not to agro anything, you don't need to kill anything in that area. When the road turns left at the small anuhart camp, go right instead and along the wall until you enter the mine area.
17] Kill the mobs at the mine entrance area. Kill the drana on the right side (points). Now go left, kill the drana and the 2 mobs near it. Mark the first bug boss if you see it. If you are killing stuff at this point, then pull them to the drana lump area without agroing the bug. Kill the drana on the right side up the hill with ranged attacks. Kill the drana down the hill normally and the mobs around that area. Go to the second drana lump, kill the drana at the wall. You might want to kill the invisible huntlord at the tree but you don't have to.
18] Now head east again towards the 2 other bug areas. If the first bug is coming, go back to the second drana lump you just came from and have your tank pull it (remember unwavering devotion). Kill the bug by getting it stunned on the drana lump. When the stun is blinking fast run to the first drana lump and repeat until its dead.
19] Now head into the 2 other bug bosses area. Kill the drana on your right. Kill the drana on the hill ahead. Mark the bug bosses if you can see them. Turn left towards the corner and dont agro the invisible huntlord. Kill the captain in this corner and the drana behind him. Kill only the mobs you have to to do this.
20] Head back. If one of the bugs are incoming, have the group run back and your tank pull to the second lump in step 17.
21] Assuming all 3 bugs are dead now go into the 2nd and 3rd bug boss area again. Turn slightly right and kill the drana. Then left, kill drana. Right, kill drana. Kill the invoker and the ranger mob. Then kill the captain in the corner.
22] After this captain is dead jump on the rocks along the wall (so you don't agro the mobs just below the rock) and head for the tree. Kill the invisible mob there. Then further along the wall in the corner and kill the captain there.
23] After this captain is dead kill the drana behind them. Go up the hill on the edge so you dont agro mobs. Kill the drana up there. Kill the drana just below the hill.
24] Optionally head around the hill and kill the last drana on the other side. After this head back to the first bug location just before 2nd drana lump. Now go up the ramp into the Tutty area (the same area with the box for the stigma quest). Kill the mobs on the ramp. Take a left and run along the wall. Kill the patrolling mob. Pull the captain. Go further along the wall, kill the last mob and the drana. Then jump off the hill at the corner and glide down.
25] Ranged kill the drana at the bottom where you land. Head towards the gate but kill the drana on the left next to the wall and the right next to the wall before you do that.
26] You're now done with all the captains. Kill the wall and the mobs. Kill the mushroom packs and the mobs you have to on the way to the cave.
27] Once in the cave take a left, kill the mobs and use a drana bomb. Kill hewahewa for points.
28] Go back out and kill your way to the teleporter boss. Kill him. Have someone loot the Nex ore after the teleporter is dead while the rest goes ahead. Remember the teleporter does two pulls after he dies, so don't start on the Nex ore before that has happened.
29] Kill your way further up until the pack next to the breakable wall. Kill them close to the breakable wall so that whoever you have collecting Nex ore can grab it without getting hit by aoe.
30] Break the wall, kill the invisible. Kill your way to the generator room. Pull the mobs on the sides. The patrols. After these are dead pull the pack with the healer straight ahead. Once they have been pull back into the tunnel, have your Nex collector gather the ore while the rest fight.
31] Clear the last mobs on the left side of the generator room. Head up the ramp, kill the patrol and the invisible. Walk across the middle and kill the caster and healer patrol. Then kill the last 2 mobs at the base of the ramp.
32] Now the generator room should be clear. Kill the confusion generator first (the one on the far left of the room when you came from the tunnel). This because orbs might stay up after each generator dies. Confusion generators + damage generators are bad. So confusion one first. Then middle. Then the last one.
33] Rest up and kill general anuhart.
34] If you've done well you should now have more than enough points for a very comfortable A grade score. It should look something like 17k-19k points, and you should have 1-2 hours left.
Enjoy ^^
Edit: Forgive me if there are small errors here and there, i wrote it all from the top of my head