Be stealthy when approaching hostiles
Another key Indiana Jones and the Great Circle tip to remember is that the game primarily encourages you to approach objectives stealthily. That’s why there are a few related mechanics and actions, such as staying in the dark while moving around or using ziplines high above enemy squads. You can throw bottles to distract guards, too.
Now, if you want to take out an opponent without raising the alarm, make sure you’re holding a melee weapon in your hands. It can be anything from batons, torches, or wrenches, to shovels, metal pipes, and even brooms. Then, approach a target from behind and press the attack button. Doing so will cause Indy to perform a takedown move.
Note that some guards will follow a regular patrolling script. Try to hide an enemy that you’ve just knocked out so their body isn’t seen by their comrades.