conker

OK here's my question. i just got this game and my bro beat it while i was away. however he still has purple streak and flame fire locked. what do they do? and how do you unlock them? i can't seem to find it on the net. thanks

http://www.gametrailers.com/gt_vault/t_conker_lnr_e3_2k4.html i definately gotta get this game