Constantly respawning in the middle of the goblin army!

While this might not be practical or possible in all situations I was able to get through this in about an hour after dying a lot.

Since I was located inside my base my stored items were in close vicinity. Enemies would follow me and in a general sense be drawn to my location of death as well. I would move my character, 20-30 squares when I was lucky, away from my base to give me a little lead time ahead of some of the goblins. This proved useless against the wizards but after a few tries I gained enough time to get to a chest in the opposite direction.

However I only had time to remove one ... sometimes two at a time. I selected a flail and a yoyo on a separate occasion. Trick at this point was to move as little as possible with the exception of jump dodging. I would get in a hit or two before I died.

Now when I would re-spawn I would instantly be equipped with a weapon which usually occupied the same slot. Sometime I would pick us spike balls so that death would accomplish nothing. Many deaths were for not and I could not get any hits in either due to knockback or appearing in front of projectiles.

After a long period of working like this the army was defeated and the summoner eventually de-spawned and did not need to be killed. (Would only have been a matter of time before she perished before my infinite lives though)

In the end I lost nothing but some time in my actual life.

You respawn with a pickaxe right? You could slowly attempt to dig a hole under or near your spawn point. Once you get a bit of dirt you can make walls surrounding yourself that will protect from all mobs except for the sorcerer's projectiles, but those can be destroyed by hitting them with the pickaxe.