Worms Armageddon | mission 25
Quite easy mission, but it can still surprise you, as the sheep doesn't jump on a regular basis, so it may take a few attempts for it to get to the right... Also, you have to explode the sheep as close to the target crate as possible.
If you are not able to do it as I did, you can throw a grenade, which will stuck by the last girder and make a hole for the sheep. Then your fluffy friend will easily fall through the hole and you will destroy the target...
Soustruh - http://wormscesky.cz