Wow, that first track is savage! I love those gravely whispering voices. Chills when the drums come in. Had to listen to this again. Even better at high volume, so maybe you could use this to make the dynamic buildup more pronounced, would give me a real jump scare.
Also neat job with the second one. Same unsettling vibe, and very cinematic. Love the buildup at 1:50. What orchestral library is this? Very effective!