This tree spirit is weak to fire spells and magic in general, and has reasonably high melee and defence. However, it will die fairly easily if the player hides behind the big yellow mushrooms near the Dramen Tree. It can be ranged or maged safely. Also it is not advised to use the bronze hatchet dropped from the zombies to kill it as the axe is weak and the tree spirit has a really high defence. Using fire spells like fire strike can be a very cheap but fairly effective way for low levels, but it also requires them to bring materials for a wand (thread and imphide/spider silk/batwing) and to craft the wand upon entering the dungeon.
It's possible to range the Dramen Tree spirit. Arrows, unstrung bows and bowstrings are allowed on the island. Simply string the bow when you reach the dungeon. For those who prefer not to use ranged or magic attacks, the Ring of recoil is an option.
The tree spirit originally looked quite abstract, as it previously wore an opaque light green robe and had dark brown claws and a hidden face. The spirit was improved when the Lost City quest was updated.
If you click the tree right after you kill the spirit (before its death animation has finished) another one will spawn. You will be able to cut the tree but you will have to avoid the spirit.