"To Us shall be their coming, then with Us shall be their reckoning." 
[Surah Al-Takweer (88:25-26)]
People will be brought to account for their deeds, as well as for their resolved intentions.
When two Muslims encounter one another with their swords, the murderer and the murdered shall be in the Fire."
[Narrated by Bukhari and Muslim]

There will be some who will enter heaven without reckoning. In the hadith narrated by Muslim, the Prophet (S.A.W.) says, that the nations of all prophets were exposed to him. He saw some Prophets with only one or two people, or their family members with them (i.e. no-one else had believed on them). Then, He saw a huge crowd, and thought that was his ummah. Angel Jibreel (Gabriel) alayhis-salam told him that it was actually the ummah of Prophet Moses (alayhis-salam), but he indicated to him a larger crowd which stretched from one horizon to the other, and told him that this was his ummah. He said, "and with them are 70,000 who shall enter heaven without reckoning or punishment." They are those who do not use charms, nor seek them from others, nor draw omens, but rely upon their Lord."
Martyrs of the battlefield will also be exempted from the reckoning. "While the servant are standing at the place of reckoning, a [group of] people will come with their swords on their backs dripping blood, and they will assemble at the gate of Heaven. It will be asked, "Who are these?" whereupon it will be said, "They are the martyrs; they were alive, receiving sustenance." 
[Narrated by Tabarani]
The balances will be erected and the deeds will be weighed. These balances will be real and will have pans and needles. Allah (S.W.T.), the Exalted and Glorified, will give the deeds of the creatures a material existence that will have weight. The good deeds will be place in one pan and the evil deeds in the other, as Allah (S.W.T.) has informed in the Holy Qu'ran Surah Al-anbiya (21:47)
We shall set up scales of justice for the Day of Judgment, so that not a soul will be dealt with unjustly in the least. And if there be (no more than) the weight of a mustard seed, We will bring it (to account): and enough are We to take account.
Allah (S.W.T.) Says, O ye in sin! get ye apart this Day! "Did I not enjoin on you, O ye children of Adam, that ye should not worship Satan: for that he was to you an enemy avowed?-

"And that ye should worship Me, (for that) this was the Straight Way? "But he did lead astray a great multitude of you, did ye not, then, understand?
"This is the Hell of which ye were (Repeatedly) warned! "Embrace ye the (Fire) this Day, for that ye (Persistently) rejected (Truth)."
That Day shall We set a seal on their mouths. But their hands will speak to Us, and their feet bear witness, to all that they did.
[Surah Yasiin (36:59-65)]
On the Day that the enemies of Allah (S.W.T.) will gathered together to the Fire, they will be marched in ranks.
At length, when they reach the (Fire), their hearing, their sight, and their skins will bear witness against them, as to (all) their deeds. They will say to their skins: "Why bear ye witness against us?" They will say: "Allah (S.W.T.) hath given us speech,- (He) Who giveth speech to everything: He created you for the first time, and unto Him were ye to return. 
[Surah Hamiim (41:19-21)]
Verily the companinons of the Garden shall that Day have joy in all that they do; They and their associates will be in groves of (cool) shade, reclining on Thrones (of dignity); (Every) fruit (enjoyment) will be there for them; they shall have whatever they call for; "Peace!" a Word (of salutation) from a Lord Most Merciful!