I'm guessing I'm too late for the monsters within challenge?

I just found out about this game and picked it up yesterday. I did the tasks that were available but I'm only 1400/3000.

I thought maybe the challenges would refresh after I cleared them but it looks like they don't.

Am I too late for this event? Kinda bummed if I am, that Loba skin looks great.

Still having a blast at the game though - even if I'm a bit crap, lol.