Each level you get to is harder.
These are the levels:
1st Level: Easy
2nd Level:Chill
3rd Level:Challenging
4th Level: Mid-Extreme

Please Feature this,
@HiberOfficial
@HiberLabs
@Per
@John
@Johan
@mattias
@Satchmosax
@Nols
@MegaMouth
@MarvelousFormula9
@AddeNordh
@Nerx
@fille1000