Like the title said, I deleted the saves and all my map information is gone and I'm repeating things. For example the cockatrice in the sewers and re-emptying the barrels and all. I also think my stats were affected. Before my level was high enough that the drowners couldn't touch me, but now they're sneaking in punches and my health is affected.

Any fix? :(

Thats a new one on me. I Recommend removing the save files instead of deleting them. Back them up every few hours if you save a lot. Cut and past 80% of them into a new folder. Deleting is a bad idea.

You could possibly find a saved game editor?