I was terrified of entering the swamp until I watched a greydork take a good amount of health from a draugr so I decided to at least try to melee one. They are terrifying until you realize they are nearly only as dangerous as the greys from the Black Forest. In a very short period of time I learned to parry with the bronze buckler and draugr are really not much of a threat at all. I've killed two abominations easily by kiting them like I do trolls and running them into other mobs to give me time to recover stam and pepper them with fire arrows. The blobs you have to keep away from you until you can craft some poison resist potions. I think you will do fine if you follow the above advice about being rested, having good food and not ever going in there at night. Use the bronze buckler (I only have troll armor so I am pretty sure that's sufficient). Making the time to make a safe passageway to and from the swamp would be a good idea. I was lucky enough to have some swamplands attached to my Meadows/Black Forest biome. I have a tree fort where I keep my portal up in the Black Forest at the edge of the swamp so I can portal home to sleep/repair/replenish. Good luck~ It's a lot of fun, but risky.