It sounds like normal puppy behaviour, Willow had me in tears a few times as a pup as I thought she was out of control. When willow was playing too rough I would make a yip noise and turn my back and end the game, she soon learnt.
Re the mess in your garden, it might be worth your putting your pup on a lead in the garden, this is what a trainer advised me, and then its easier to correct unwanted behaviours. For example Willow as a pup used to head towards where we had pebbles and put them in her mouth, we then put her on her lead and wouldnt allow her on that area, within a few weeks even when off the lead then she knew not to go on that area. Having them on a lead i found helped with the housetraining too and she didnt get side tracked with play and would go to the loo.
I would then start letting Hugo off the lead for short times in the garden and praise him when he isnt destroying your garden and put him back on the lead when and if he does it again. It worked for us. Good luck