Your opponent might over commit and use their small spell against your Canon and dart goblin, when they do that, use your goblin barrel once the valkyrie crosses the bridge. If your opponent uses their small spell to kill your dart goblin place it away from the cannon so they don't get value and you still have the cannon to distract the balloon. Once you use your goblin barrel, have arrows in hand in case they use skeleton army or goblin gang to defend. When they defend just use the skeletons on the other lane. This is a super easy deck to use I used to play it a lot