Che is there difficulty levels? (Half-Life: Alyx)

Gentlemen, explain, how much change shootout, depending on the particular ur-nya complexity? I simple look passing and I think that amps are some kind of wild - you can eat head on the floor pistol clips, which for me creates a dissonance. In early gameplay videos of Alix did not really think about the exact unit hegseth and released several bullets in the chest of the combine, after which he died beautifully(I hate headshots too pure). If you play on easy, this problem(Yes, for me the problem) once leveled?