Challenge by @DanieIe2 , open verification. 

Code: 2442129228-6431966707

Possible Difficulty: Top 1

Challenge by @BigOofersRock , open verification. 

Code: 1458378254-3746074998 

Possible Difficulty: Top 1

Challenge by @BigOofersRock, unreleased.

Code: Unavailable.

Possible Difficulty: Top 0 (A.K.A semi-impossible)

Challenge by inclemetite_backup on Discord, open verification.

Code: 1176855686-3322229697

Possible Difficulty: Top 2-3

Challenge by @L3umasDeveloper, open verification.

Code: 1603105628-9733477804 

Possible Difficulty: Top 2-2.5