Any good tips for the 140's in CC1?

[quiznos00]

In my playthrough of CC1, I am nearing the final levels! I don't really go to the wiki a lot for level solutions, as they usually contain bold solutions. I just wanted to see if anyone has any good tips for the last 10 levels in CC1? Mainly these:

139 - GOLDKEY

140 - ICEDEATH

143 - STRIPES?

146 - CAKE WALK

147 - FORCE FIELD

148 - MIND BLOCK

Thanks. [i don't want to take TOO long to finish CC1!

And I just had to say this... TOTALLY UNFAIR IS SO EASY.

(Goldkey is 137)

And Force Field requires the most patience of any CC1 level, in my opinion.