The following is not in the correct sequence of the movie
The Movie starts with Harry sitting in park, with Dudley entering the scene as always the trouble maker (Dudley looks Squint). The Dementors attacking both is shown extremely well!!! I couldn't get one thing can Dudley see Dementors, I think not!!!
Aunt Petunia looks skinny,

though they are only for two scenes.....
As Harry performs the Patronus Charm to save Dudley's A$$ from Dementors, he is expelled from Hogwarts & is called for a full fledged hearing in the Ministry of the Magic (seems to be a larger version of Mantralaya). The Harry's hearing is very well depicted, the confrontation b/w Dumbledore & Fudge is interesting &
fun to watch...
The Black's house is perfectly shown, though Kreacher's role has been cut short in this movie, coz he plays the important role in misguiding Harry!!! Tonks looks gr8
Shacklebot looks like Lawrence Fishburne of Matrix
Sirius discloses to Harry why the OOP is formed & what is Voldemort after?
After the Court scene Harry is off to School & for the first time he could see who pulls their Carriages to Hogwarts - Thestrals - they look like dead horses with wings.
There they meet Looney oops sorry Luna Luvgood....

The story takes a turn when Dolores Umbridge is introduced as Defence against the Darks Arts teacher during the Feast.....Hagrid's missing coz he's on a secret mission sent by Dumbledore....but IMO Dumbledore in the movie haven't looked friendly with Harry Potter since the third movie
Nxt day in the class of DADA, the interaction b/w Harry & Umbridge is excellently enacted. Umbridge(Imelda Stauton) is Excellent choice for the role of Umbridge. She seems to be on Laughter therapy, though!!! Harry is detained to Umbridge's room, doing lines with Harry's own blood seeped through the pen given by Umbridge.
Sirus informs Harry that he is on his own in Hogwarts, hence the Dumbledore's Army (DA) is formed by Hermoine. A meeting is called in Hogsmeade for prospective candidates to be inducted in DA. Harry's splendid dialect with the members is shown gracefully....
Neville is shown finding the Room of Requirements, (whereas in the book Dobby tells Harry abt ROR). the lessons are shown wonderfully & the Harry is actually shown teaching the students how to cast the spells....Filch's eagerness to know about the Classes is also well woven in the story....
After an argument with McGonagall, Umbridge is appointed as High Inquisitor in Hogwarts. She noses in to everybody's class....everyone...she expells Sybil Trelawney as the Divinity professor. The scene is excellently shown as every student is out on the grounds & then Dumbledore takes her inside Hogwarts again. After dat the DA's classes are found out by Umbridge via Cho Chang by usage of Verisaterum(Truth Potion). Dumbledore accepts that he is the founder of the DA & flees away stylishly.
After that Umbridge is appointed as HeadMaster of Hogwarts!!!
Then things go Haywire in Hogwarts!!! The Ordinary Wizarding LevelS(OWLS) exams are under strict observation of Umbridge....the exit of Weasley's is excellently depicted. The VFX is amazing in this particular sequence. Specially the Dragon chase of Umbridge.
Harry's visions start to show him through the vision of Voldemort. The attack on Mr. Weasly & Sirius are well shown. Also the Occlumency Lessons b/w Snape & Harry & when the past of Snape as a loser in front of James Potter are well described & shown. Snape asks Harry to prove that he is not weak & not let Voldermort enter the mind.
Taking the benefit of Harry's weakness Voldemort pitches in Harry's mind that Sirius is getting attacked by him. Harry rushes to Umbridge's office to go via Floo Network but got caught in the act & the DA is then handled by Inquisitor squad. Snape denies any help to Umbridge in providing Verisaterum. Harry conveys to Snape that Padfoot (Sirius) is in trouble at Ministry of Magic, but in vain. Umbridge then tries to force out of Harry what is Dumbledore's secret weapon through Cruciatus curse(Mind Control). But Hermoine jumps in b/w & agrees to show Umbridge the secret weapon. She takes Umbridge to Forest where Hagrid's Half Brother "GRAWP" but then she gets herself on the wrong side of Centaurs(Half men, Half Horse) then she is manhandled & taken away by them.
Harry & Hermoine hurries away to the school & then the DA i.e. HARRY, HERMOINE, RON, LUNA, NEVILLE, & GINY.....rushes away to Ministry of Magic in search of Sirius. But when they arrive at the place they don't see anybody. Although Harry hears the Prophecy which Voldemort is after. Soon after that all the Death eaters arrive & the chase starts....
Harry arrives at the Veil from where the voices of Dead People are coming. As Harry hears them, Deatheaters arrive & take away all the DA members except Harry. Sirius Arrives & then the fight again starts. After sometimes OOP arrives &

Bellatrix Stuns Sirius & he is pushed into the Veil. Harry loses his god Father
To catch Bellatrix Harry runs after her & then Voldemort arrives. but Harry is not alone; Dumbledore appears

& the duel b/w them starts.
The VFX shown here are amazing, & beautifully shown. The duel ends when Dumbledore overpowers Voldemort. Voldemort enters Harry & threatens Dumbledore to kill harry to kill him. But Harry fights himself out of it
As the Ministry arrives on the scene Voldemort is spotted by them & Fudge turns out to be wrong - "He's BACK" are his words. Voldemort flees. DA comes out of the room to see Harry lying on the lap of Dumbledore.
After the scene Dumbledore is reinstated as HeadMaster of Hogwarts. Fudge thinks of Quitting. etc..... Dumbledore & Harry have a word as in all the previous movies. The movie ends blatantly!!!
THE ACTORS
Daniel - Excellent | especially when Voldemort enters Harry

Tremendous
Hermoine - not much role but good
Ron - Again not much role but good
Luna - Good performance but very low on voice
Neville - Good performance
Voldemort - Excellent acting
Dumbledore - As i mentioned above behaving as if he's on Voldemort's side
Umbridge - Perfect for the role
Sirius - Great again
DIRECTOR
David Yates has done a wonderful Job & a sleek direction which was needed. The Camera angles were there where it was required.
Also a
Fun fact would be that Harry's Scar is missing in few scenes.
There were too many characters also, but have only mention the important characters involved.
The Movie can be termed as the best in the series, IMO.
Its a must watch for any Potter Fan & the usual cinema goers.
I rate it 8/10
Although the screenplay was tight, also heard rumors that if the film went over the set timeline of 138mins/2hrs18mins. the company would have made losses. Dunno if its true but I Seriously think it should have been bit more. Atleast the ending where Dumbledore explains everything to Harry. The film ended very quickly as if the movie was waiting when the fight gets over.
It was Great Watch & I thoroughly enjoyed the movie

The Movie is Visually Spectacular!!!
The only opinion would be -
Don't carry the book in your mind while watching the movie - you'll be impressed!!!
You have to watch it to believe the magic cast upon you!!!