Honestly? Terribly. I love the phone for being by my side since November of 2012 when it came out and it's a definite looker. It's just been deteriorating slowly and slowly and even when the N5 came out it was already noticeably different than when it started but things got even worse the last few months.
The back camera is pretty bad, and it seems like it's gotten slower and worse as time went on.
Also, after having a repair done, my front camera has completely gone unoperational.
The bottom portion of the screen with the touch keys gave out two months ago and I have to use a separate app to have Floating Touch Keys.
My status bar hasn't been sliding down right the last week or so.
The battery life which is deteriorating is terrible, and even with rather light usage [occasional internet and music, no games, sometimes checking Snapchat or IG] I was lucky to leave with 35 percent. I carry around a portable charger now though.
The Headphone jack is busted to where only one ear works regardless of what earphones I'm using.
It's become laggy and sometimes crashes randomly once every rare while.
16GB isn't anywhere near enough especially for my music and most other things. I never have more than a gig of storage at any given time.
That's about it. Still, I've had this phone longer than any other and it was an amazing phone when it came out and I'm not annoyed to carry it around, even though it's slowly dieing. Planning on an N6 upgrade this/next month.
Also - LTE kernel is the best thing in the world.