I just finished HH and at the very end i was spawned in front of a chest with all the unique items the DLC has.

Is this meant to happen or is this a bug?

Its the reward

Sigh....It's a reward...I for one was really happy about it..Shows the Dev team was looking out for the fans..

It's pretty much a gift from the devs. I thought it was really awesome. It's not supposed to make sense, but who cares? All it affects is your gameplay and that you get to use the armors from the DLC which is awesome. I was thinking that stuff was gone and was so happy to see it there at the end. Here's a big THANK YOU to the devs for this DLC, I for one think it was great.

Yea I for one was glad they added that at the very end. While me and Joshua tracked down the white legs leader I allowed him to have a fighting chance instead of him being executed...of course this led to him dieing too fast anyways and not getting much of a chance to get his unique gear( Joshua Graham hits too hard lol). But yea it was nice to get 'most' of the unique HH gear at the end.

I thought that it was an awesome thing to do.

I liked getting all that sweet gear at the end, it just kept me from having to jump through hoops and reverse pickpocket or kill essential characters in order to acquire it so it was a plus IMO.

I just wish the chest was put somewhere out of the way.

Putting it right in the middle of the road near the exit just screams 'Game reward' to me.

It was supposed to be easy, at least they didn't pull a Mass Effect 2 and make DLCs that were just two guns that mysteriously ended up in your locker that still costs 5 bucks or a Fable 3 and make you pay RL money just to get a new hat or set of dyes with no quest or anything.