really, your missing the voice acting, AI, anamation, the fact they're on different consoles, graphics, the design of the single player maps, and the design of the multiplayer maps.
A game isn't better just because it has more weapons.
(and there's no way tribes can win SPmaps, if you play through the ones in halo, you won't notice anything wrong. however, if you really try, you'll be able to find a few mistakes or easter eggs they put in there for the people that look for those...)
And you're missing a lot in the story.
The ship the Pillar Of Autumn, we don't know what it's doing, was being attacked by multiple Covenant starships. The Covenant are known of. However, they haven't been seen for a long time either. They make a "blind jump" and end up getting out of hyperspace(or whatever they're in) near a strange ring-world. The Covenant have apparently declared a religous war, but no one completely knows why. Since the Covenant are attacking, and close to boarding range, Captain Keyes decides to put everyone on post. Even they're back up, The Master Chief. A super-powered cyberneticly enhanced human, with really cool armor. Unfortunatly, the Covenant destroy the only major defence on the Autumn. So, Keyes clears everyone out. He tells the MC to get Cortana, the ship's AI, off the ship. If the Covenant find her, they would know everything, like the postition of earth. As the covenant start boarding, it becomes harder and harder to find a leaving lifeboat. After an extensive search, they find one. They leave in the lifeboat, and try to land on the ringworld. They see that Keyes is also manually taking in the Autumn on the ring-world. However, while their lifeboat is landing, something goes wrong with the airbrake, and a horrible crash ensues.You are the only survivor. A covenant landing party comes to try to find any survivors, and you are barely able to escape. You find that there are other lifeboats that were more lucky. most of the marines on each one survived, but the Covenant had spotted them. You have to fight off each Covenant attack force at each lifeboat. However, after doing this, you discover that Captain Keyes has been captured, and is being held in a Covenant Cruser, the Truth and Reconcilation. After you fight through the forces to a gravity lift that transports supplies to the ship, you get on it. As you get in the ship, you are met by many covenant strike forces. Once you reach the ships brig, you finally find Captain Keyes. He tells you that he overheard some Covenant guards talking about Halo, it's deep religous significance, and that it's a weapon. And between Cortana's message interseptions, and what Keyes heard, they find that the Covenant are looking for a control room to control Halo. So, you go an island on Halo, which contains "The Silent Cartographer", a complete map of Halo, showing were everything is, including the control room. Unfortunatly, the Covenant know about it too, and have beaten the humans there. After destroying the Covenant forces designed to keep you out of the Cartographer, you finally find where the Control room is. Unfortunatly, the Covenant have beaten you there again, and the area is well secured. Once you reach the Control Room, you insert cortana into it so she can gain all the knowlege she needs about Halo. However, she finds somthing very disturbing, and tells you to go find the Captiain, because he's looking for a weapons cache that not really weapons, and could be very dangerous. So, you run off, unfortunatly without her. You go to where captain Keyes' last transmission was, over twelve hours ago. Along the way you see a lot of dead marines, running, scared covenant, and recieve a few distress signals. Once you are inside the structure, you find another dead marine body, which drops out of a door. you take a chip out of his helmet, and put it in yours. It's a helmet cam view of a marine called Jenkins. They enter the building and are assulted by a strange life form, they seem to be little squids. After fighting many of these puny squids, and coming across some very large ones, shaped like deformed humans and covenant. After being chased out of the building by these life forms, you reach another structure. at the base of this structure, there are flying machines that use lasers to tear away at the flood. Another small robot, with a blue glow, hovers above you. His name is 343 guilty Spark. He tells you that the life forms are the flood and that he needs your help to contain them.
*more soon*
