During The First Dragon Quest it's worth to focus on two, unique for this event monsters:
Ice Dragon (you have to kill 1000 of them and get 25 charm points)
Haunted Dragon (you have to kill 2500 of them and get 50 charm points)
In total: 75 charm points.
You can also do regular Dragons and Dragon Lords in new, additional place.
To face with event-montsters you have to go to the west from Ankrahmun:
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Use exani hur up here:
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Then go upstairs and enter the huge, dark blue gates, by using small lava pool:
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On level -2 you will find regular Dragons.
On level -3 you will find regular Dragon Lords.
On level -4 you will find event-monster Ice Dragon.
On level -5 you will find event-monster Haunted Dragon.
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Source of photos: Tibiopedia.pl