Amount Completed: Entire game with just about every activity completed (might have missed gold on a few).
Saints Row IV takes the Saints Row series into an entirely different style of plot but continues and expands the standard sandbox gameplay of previous games. Now in addition to the standard run/gun/drive gameplay your character takes on ridiculous super-hero powers allowing you to run up buildings and glide through the air. This functionality was first seen in DLC for SR3 only to be expanded upon extensively for SR4.
The plot was a bit bizarre at first but seemed acceptable in its semi-serious homage to Mass Effect. Unfortunately as with the previous games the writing seems to leave a lot to be desired. It's not necessarily that things are weird and sometimes outlandish it's that so many decisions/characters just leave you confused and asking "why" -- it's primarily a problem of not really having a solid rulebook for given characters as they go through the plot of the games.
The game plays really well with tons of things going on at once. I was very impressed with the graphics as I flew through the city and leapt across the skyline. This is not to say the graphics themselves are always great but the performance certainly was. The activities were a lot less frustrating than in the previous games... but not always that much fun. Platform jumping and hurling colored items at targets seemed more like a demo for a Wii game than a Saints Row activity.
Gut: I really enjoyed the actual gameplay experience. The quick time events were limited and used appropriately. Much of the story was meh/fine but like its predecessors when it was bad it was really terrible. I definitely recommend Saints Row IV for the super-powered sandbox experience. (My Playthrough experience)