I’ve been plundering for two days and gotten to level 11, so I think I can provide some help in getting consistent results.
Being the last survivor is the point, of course, but getting into the top 2 only got me 866 points, and that’s only happened once so far, so don’t focus on killing other players.
What appears to be the key to getting a good score each game is completing the quest one gets after landing in the zone. There are several:
kill 10 creatures (any enemy npc): each baddie has a 30 second cast ability which can be easily dodged to avoid damage.
loot 30 treasures (piles of gold on ground): this is the easiest-gold piles are all over the place with a green beam of light pointing at them so they can be seen at a distance.
open 2 chests: also very easy, chests are everywhere, but don’t have any light beams, and they tend to be behind things, so you’ll need to search around.
equip 2 items: this I found to be the most difficult, items rarely drop, but you can equip the same item: you start with a barrel (a type of vehicle) and if you find another barrel you can equip that to get credit.
kill 2 elite creatures: this is a little tricky. Bears and owlkin are the easiest to kill at level 1, again they have a 30 second cast ability that you can dodge. For griffons and anything else, it’s best to get to level 2 and have at least 1 spell before engaging: griffons have a knock-back ability that does a lot of damage. Human elites call other humans to aid them. Kobolds have powerful fire spells. Trolls do a ton of area damage that’s almost impossible to avoid. Ogres summon a lot of imps. Elementals do a lot of elemental damage. Horde elites have a whirlwind sword attack. Undead also do a ton of damage-some kind of purple wave thing.
acquire 3 spells: spells can drop from anything, and also have light beams on them so they’re easy to spot.
Getting a quest done seems to net a consistent 271-367 points. So I focus on the quest, looting everything, killing everything, upgrading every spell, and figure spending an hour to reach the next level. So I try to limit myself to five hours a day so I can get some sleep. I also search areas that have already been cleaned out because those are good places to find left-over spells and items. And Faldir’s Cove, where the dock and ship are, is also accessible, but not the other side where the cave tunnel is, for whatever reason.