Depends on where you are in the game itself in terms of armor, weapons, consumables, etc. The Swamps are unforgiving, but you're looking for crypts to unlock when you're in the Swamps (these crypts are full of Blobs, Draugr, skeletons also and in more compact spaces; be prepared for this special hell). All I can really tell you is to adopt a more stealthy approach when in the Swamps. Do not go out of your way to fight every single enemy you come across, save your strength, health and items for the crypts.