Put this clip just before the reveal in a gameplay edit, then follow it with the FNAF jumpscare scream for a scare payoff or a pop sound effect for a lighter reveal, and save the enemy spotted line for a second character entering afterward.
About this sound
This is a short 1.2-second sound effect of dirt shifting and rising as something breaks through the soil. It feels playful but tense, like a warning that a zombie is about to appear on the lawn. The clip comes from Plants vs. Zombies, the tower defense game where plants defend against waves of zombies.