They added a few new weapons like a lazer gun, electricity gun, and a chain gun. My favorite gun is the lazer, but it's hard to come by them and they are available near the end of the game.
The AI is very intelligent. Some of the enemies are so damn hard. Especially these... ninja? cyborg things. Idk what they are, but they can dodge every attack and take massage amounts of damage. Also, they are packing some of the best weapons in the game.
This fear is a bit scarier than the previous. More so doom type of scares. Crap flying everywhere and then random flashes that scream at you at random moments.
The ending was terrible, but more than likely there will be a Fear 3.