I'm not going to explain any of these puzzles well but i'll try
1. You send the fox to the very bottom row to knock down the green wall this will cause all the guard to look left.
2. Collect the fox head up to the top row. The horse will send both you and the fox over the wall once here stand the the top left corner.
3. send the fox to knock down the most top green wall. this will cause all the guards to look up. After that you should be fine to pass. The third green wall in between both green walls is a trap I assume don't knock it over its pointless.
Now this one I'm stuck on.
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This one isn't bad its all about timing since both the horse and the fox move at the same speed its just a waiting game
1. Send the horse down to get the switch she will go back and forth occasionally getting the switch.
2. go on the other side using the vent make sure not to get caught and bring the fox with you.
3. time the fox with the horse so that both of them hit the switch at the same time. I sent both of them going vertically so that they wouldn't be miss aligned.
4. wait for a good opening where the guards aren't blocking the door and the horse and the fox pull the switch at the same time when you can walk through.
This one is a game of time
1. activate the bottom switch using the fox.
2. once the room in the center opens you have to time the switch so that you have enough time to run around the guard.
3. I usually activate the switch when the guard starts looking to the right so you have time to exit through the vent.( the switches are weird honestly run back and forth over them if they don't seem to active because i stood over switches in this game and they seems to be activated with movement or something.)
4. just walk around the guard try not to get caught if I remember this guard looks in a order of right>bottom>left then it repeats. you should have enough time remember you can hole space to fast-forward time.