I remember getting stuck at that part in Chapter 6 too. It can be quite tricky to find the key to free the soldier in the cage. Just like deathklan mentioned, take a good look around the area. Often, game developers hide items behind rocks or in less obvious spots. If you're still struggling, you might find some useful tips from other players who faced the same challenge. By the way, if you're interested in gaming or looking for some online entertainment, you can check out
spinogambino. They have a variety of games that might catch your interest. Exploring new games can really help improve your skills and keep things fun!