This dlc really tries to expand upon the combat in interesting ways, i played it on nightmare so I couldn't really engage with those ideas that much because the best thing to do is just to run away, but they are still neat ideas to thrown in with Alan Wake's flashlight system.
The ending boss fight thing is absolutely horrid on nightmare difficulty. Possessed objects are the least fun thing to deal with because dodging sucks ass and they take way too long to destroy. It sucked on that bridge segment in the main game, and it sucks even harder here.