Opinions on Cod WW2 Zombies and Player skins

Me and my friends have finally completed the hard easter egg after doing the casual one like 10 times. Now were currently trying to complete the casual easter egg by round 12. Its a hard task but we've gotten close twice now. How do you guys feel about the challenges to unlock new characters.

It is very good that they added new skins, I'm very happy about this, it's cool super...