Daniel and Phillip

[cantremember]

IMO Phillip endured the more scary parts. Daniel could in most instances just hide when he heard a monster.

Phillip had to deal with giant spiders (and get in direct conflict with them). Some tuurngait also inevitably going straight after Phillip (like when you have to lure one into the server room or the one at the end).

Also when Daniel was captured he knew they would let him sit there and wait for the Shadow to take him.
When Phillip got knocked out and captured, he had no idea when they would come, or what kind of sick experiments they would do on him

Daniel also had safe level hubs, Phillips had Tuurngait roaming the level hub (which was also more maze-ish than Daniel's hubs). Also the idea of being in rooms where through notes and wood carvings you know that the previous occupants have died horrific deaths at the hands of the creatures that lurk there, that's kinda scary. In Amnesia the previous occupants just died at your own or Alexander's hands.