Originally posted by Xenomorph:

keep it to get you skills up

Avoid destroying the spawner if you can. Mark it on the map and go around it. A spawner is a great way to skill-up on your weapons of choice while gathering all the wood and resin you want.

And shooting greydwarfs as quick as they spawn (without hitting the spawner) makes a nice, relaxing twitch game within the game.

You can start with the bow as soon as you have a good-enough rate of fire and accuracy to keep them from reaching your position. For melee, you want at least a good shield and mace, sword or ax. Or maybe you prefer to rely on a knife and agility. Either way, keep your portal close.