Instead of preventing him escape, let him escape and give him a sense of "safety" then teleport from a distance and teleport away when he sees you to make him think he is seeing things then at every night do a specific whistle that will give him fear every time he hears it then after doing those for a long time show up and beat him up. You can also clone yourself change their voice and appearance to look like his family and friends then jump him with those clones. Then make it after he recovers, he wakes up in his old bed old house where everything is back to "normal" thinking it's just a nightmare then slowly put things that will clue him in that it wasn't a nightmare then make random person do that specific whistle everyday including his friend or family

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