how do i get that 1 canister
 

there are 10 in every level but in the second (or is it third) level of Episode 4 there is a canister on a ledge but how can i get it....

Well, I don't remember exactly, but I an make a suggestion, if you haven't already collected that cannister. Try looking for what you need from a walkthrough maybe?

To be honest, I've needed to use these in games once and a while. :blush2:

I made a guid go in this forum go there and jou will find everyting