I have no one to play it on multiplayer, that's the problem. I rarely have got visits. I still have to test it and the online gaming.
I think the achievements try to disguise the short duration of the game... I'm starting to feel that I didn't play enough time in order to see it is weaker than RRR1 and RRR2. These two at least had a bigger duration and a bigger collection of mini-games.
Hookarium could have much more to offer, if people are buying Wii Motion Plus accessories by purpose to play this, I think I would rather recommend them to buy Wii Sports Resort instead. This Museum Room and the Dancefloor room were the ones that disappointed me more.