Given that the Halo Universe is just that, a complex fictional universe with fan-fiction, books, guides, characters, and many games, you could say that there aren't different "gens" of Halo.
If there were "gens" of Halo, then it wouldn't follow a story-line as the franchise does, each game would simply be a revamped version of it's predecessor.
But, if you combined all of the different games, which are different points in Halo's history, you would simply get the Halo storyline.
Easy again! Halo Wars, Then shortly after that Halo 3: Odst came out. Now highly waited game of all time, Halo Reach.
all of the odst make it out of the city with an enginieer.
Two or more elements combine to form a solution.
When all seven colors of the spectrum combine together, they create white light. This is because white light is a combination of all the colors in the visible spectrum.
If you mean the achievements, when you get all (Or Most) of them, You Get The Hyabusa Katana Armor, along with other armors.
Of course there will be you dumb*ss!
The names of all the Halo games are (in order): Halo: Combat Evolved, Halo 2, Halo 3, Halo Wars, Halo 3 ODST, Halo Reach, Halo: Combat Evolved Anniversary, and Halo 4. In chronological order: Halo: Wars Halo: Reach Halo: Combat Evolved/Anniversary Halo 2 Halo 3: ODST Halo 3 Halo 4
Halo : Fall of Reach Halo : The Flood Halo : First Strike Halo : Harvest Halo : Ghosts of Onyx
Halo 3, Halo wars, Halo 3:ODST and Halo:Reach
tous les gens [or] tout le monde
The word for person is "personne". However, French usually refer to people as "les gens". Example: Look at all those people! "Regarde tous ces gens!"
the recon helmet for halo 3 is unlocked by completing all of the vidmaster challenges in halo 3 and halo odst