What new features would you add in a non-Amnesia Frictional Games Adventure?

[The Rock Worm]

Feature (?) A melee weapon that only stuns an enemy, and never kills.

That would be great! Just enough to slow them down, but they are too tough to kill with MacGyver-ing up a weapon.

It would also anger an enemy that you attack, therefore becoming harder to shake off. Increases the terror.

As soon you said "It would aslo anger an enemy you attack" you made me think of "Let sleeping dragons lie" and you eagerly poking at it!