So I'm trying to complete all the challenges even though after playing the Wii U version for about a week I said "forget about it." It started out with me trying to get all the CD's (which I did) and after I noticed that I only had about 40 more challenges I decided to go for it.
I've only got 4 left, but they're sooooo time consuming since they are: Destroying 40,000 blocks in Trophy Rush, collecting 700 unique trophies (at 609 right now), All-Star on hard with 8 characters (I've already done 5 but more concerned about Trophy Rush challenge) and Collect ALL of the Headgear (I think I only need 6 more hats). I already used up all my hammers and now have to deal with the booty loot dropping of Smash 4
On the plus side, I have a whole lot of money to use since I just unlocked the challenge for having 300,000 gold.
Gonna be grinding in Trophy Rush all day...