Easy stealth kills hint
If you prefer to eliminate enemies quietly but are be finding it difficult, find an indestructible object such as a barrel or container and take it with you. When you find several enemies, stand in a position where you want an enemy to approach. While holding the barrel, throw it next to yourself or close to where you wish your target to approach. The entire group will be alerted upon hearing the object slam to the ground or wall you threw it at, but will only approach to investigate. The enemy will walk to the area alerted, stand where the sound came from, then start walking back after finding nothing. You can now knock them out or kill them undetected at your desired location. Note: If you throw the object a long distance, the investigating enemy may track the object's flight path directly back to your position. It is better to throw it nearby for repeated use.