Can anyone help me with Protectors ι?

[windkun]

I'm playing JP PSU and I have problem with B2 of The Protectors ι.

You know, there is four keys to get and I know how to get three of these.

But the last room of right path where I need to break one of containers, I can't tell which container is the right one.

It's too random. Sometimes there is a key in there and sometimes there isn't and I fail.

I've seen some videos but still I don't get it.

Can anybody help me? I'd appriciate that.

[VectormanX]

The container you need to break is bigger than the others.

[windkun]

The container you need to break is bigger than the others.

Thank you!

I was really confused there were no visible hints for me :D

[kreca]

Can anyone give me a link to the video for this new mission? i dont know how to run this mission.


Thank you.

find the video. thank u

[HienkyakuX]

solo:
http://www.youtube.com/watch?v=nnGPs9S2OwQ&feature=player_embedded

two:
http://www.youtube.com/watch?v=MdAerM8HlbA