well the game end is about the "spot times" that you have during mini-games, it must be called "insanity" or somethin like that, i've the italian edition, so i really dunno how it's called in the english one ^^... but you have to make it very quick. Oh, you have also a try-limit, so (for example, i don't remember well) you have to complete 5 spot-times in 10 tries. If you cannot complete all 5 spots within the tries number, you must restart the insanity time.
my mini-games are for sure the playing-instruments one (guitar hero style), pimp my rabbid and the shake-like-hell ones... it's very funny to watch friends' faces when they shake like mad to win

gogo rabbids! XD