probably.
stamina should be fine with 1 high stamina food and 2 health foods. Be rested, warm, and dry as much as possible (a struggle in the swamp).

elder is just a move and shoot, you can do it naked, but its better to have some defense in case you get hit.

swamp crypt: by the time you clear to a room with body piles you should have found some iron. you can hear the body pile rooms, and avoid them -- buzzing fly noise. Avoid them until you have enough iron to make a weapon and maybe a bit of the armor as well. When you do have the gear for body piles, ignore the enemy and focus the body pile until it is gone then clean up the bad guys.

many people cheese the crypts by shooting enemy a bit before opening access to melee.

The game is tough. Iron is a game changer, but its still a hard game and you have to take it slow, be prepared, be willing to run away to heal. Use terrain and corridors and such to your advantage. Dodge/avoid being hit as much as you can -- armor is nice, but not being hit at all is always better.