Worms 2: Armageddon

This will unlock on your first playthrough after completing Mission 3. The key here is to collect the Vital Crate located in the enemy’s Fort without it getting destroyed. You don’t actually need to kill any of the enemy worms, however, it is much easier if you do. This is so they don't interfere with your plans by destroying any bridges that you may place to get across. Again, this shouldn’t prove too challenging, as the enemy team is also very inaccurate here.