The first thought was to find the correspondence of runes to letters. But quick googling turned out that there was no one-to-one match. After more perusal at the runes string I noticed that part to the right from underscore looked about 20+ charcters. How many exactly?
```'ᚧᚣᚦᚬᚲᚠᚥᚶᚩᚱᚳᚵᚢᚫᚸᚤᚴᚯᚨᚭᚪᚮᚷᚡᚹᚰ'.length26```
Yes, it seemed to be an alphabet. Next assumption - in alphabetic order.  Quick JS to decode the whole message:
```str = 'ᚣᚦᚧᚦᚭᚠ{ᚠᚯᚲᚴᚪᚲᚫᚦᚹᚧᚫᚧᚵᚹᚨᚩᚨᚩᚨᚮᚲᚯᚹᚥᚯᚲᚧᚭᚷᚶᚲᚫᚨᚸᚵᚮᚩᚫᚥᚧᚫᚫᚸᚹᚩᚫᚥᚢᚸᚫᚸᚧᚵᚤᚶᚧᚣᚲᚭᚩᚦᚨᚪᚣᚨᚭᚩᚭᚪᚭᚩᚸᚫᚦᚩᚤᚶᚲᚯᚨ_ᚧᚣᚦᚬᚲᚠᚥᚶᚩᚱᚳᚵᚢᚫᚸᚤᚴᚯᚨᚭᚪᚮᚷᚡᚹᚰ}';encodedAlphabet = 'ᚧᚣᚦᚬᚲᚠᚥᚶᚩᚱᚳᚵᚢᚫᚸᚤᚴᚯᚨᚭᚪᚮᚷᚡᚹᚰ';englishAlphabet = 'abcdefghijklmnopqrstuvwxyz';out = '';
function decodeLetter(letter) {	decoded = letter;	for(j=0; j