First thing when spotting enemies is watching their patrol patterns - wlf groups will communicate positions and the seraphites use those distinct whistles so listen carefully. When they detect you pay attention to how they call out specific names, it makes tracking who knows what way easier especially when planning stealth routes. Dogs are the real game-changer though, they'll follow your scent trail so keep moving and watch for when their handlers tense up that's your cue to relocate.

The key to surviving longer fights is reading the enemy adaptation patterns. If you stick to stealth too long they'll start thoroughly searching grass and sending dogs to flush you out. Getting spotted means they'll coordinate with flanking moves and suppressive fire to pin you down, while some enemies bring shields or body armor that need specific counter-tactics. Good to know that after taking out a few enemies the survivors get more aggressive - they'll actually show emotional responses which can make them more predictable.

Infected encounters need different strategies. Clickers use echolocation so timing your movement between their clicks is crucial, while stalkers are sneaky and will actually work together to ambush you from multiple angles. Watch for the specific audio cues that telegraph their attacks, and always keep track of where other infected types are positioned since they coordinate more than you'd expect. The real challenge comes when dealing with mixed groups of human and infected enemies, that's when you need to constantly swap between different tactical approaches while managing resources carefully.