Hints

Level 1: ROT13

Level 2: What word does the two emojis make?

Level 3: This is a Caesar cypher, but what is the key?

Level 4: Pig pen cypher

Level 5: Morse code

Level 7: Vigenere cypher. The key is vigenere. You need to repeat this for the length of the message. vigenerevignerev

Level 8: Rail fence cypher. Key is 3.