u need to go through the game again ... there are some of the secret passages (the life passages) which can NOT be gotten from the end, but most of them can ... head to gamefaqs.com for a walkthrough of how to go back and get them if u can. (i love those trap things
so fun)
for the no intro/video problems ... wats ur video card?
are u running stuff in the background? try reinstalling with just an updated exe, and try not to use the no intro.