It had so much potential! And then Michael Bay produced it. Ouch.
I liked that the turtles were more individual in appearance. All their different personalities were very apparent and that was great (except Michelangelo -- WAY overdone. He was an unfeeling perv-bro. Not endearingly careless). However they were. Not. Funny. At all.
April O'Neil failed me as well, though not as I expected she would. I expected April O'Neil's personality from the old movies and comics to have been erased and replaced with a typical, damsel in distress type. That doesn't happen though and I was pleasantly surprised! What does happen is Megan Fox can't convincingly play anyone who has graduated high school yet; her performance fell flat for me.
It's just a cookie-cutter, factory-made Bay film. It felt like it was created for money-making purposes only, which is not the feeling a movie lover should have to walk away with.
All this said, you won't be un-entertained and there are a few (and I mean FEW) genuinely good moments. See it for $6 or less and you won't feel ripped off.
I liked the first Purge, but this sequel was even better. A storyline and characters that I felt far more invested in. I liked that it explored the other side of The Purge -- How the people who can't afford complex home security systems survive the night.