Yes. Spartan point are awarded after leveling up in the spartan ranks. Playing through the campaign will take a very long time to accumulate them though.
Both players will be Master Chief.
Spartan ops, forge, campaign, co-op multiplayer
Everything in Halo 4 as of now is co-op. Campaign, Spartan - Ops, and Infinity (Multiplayer) Internet, local, and system link.
Halo 4 will not have "survival mode" (by the way it's called firefight) like Reach and ODST, but it will have Spartan ops, which is essentially a second campaign based on a spartan other than Master Chief.
You can't.
The new enemy in Halo 4 is the "Didact". A 100,000 year old Forerunner-Promethean Warrior servant. The new enemies found in the campaign and spartan ops are the promethean knights, watchers and crawlers.
sr 130
Yes, I on some missions in Spartan Ops
The first player is chief and the second is spartan 4
Unlock it as a Spartan-IV at Level 12 I believe
No, Halo Reach occurs much before Halo 4. In the timeline of the actual world, the games go: Halo Wars Halo: Reach Halo Combat Evolved (And Anniversary) Halo 2 Halo 3 Halo 3 ODST (Same time as Halo 3) Halo 4
Yes, in Halo 4 you play as Master Chief and soon find other Spartans (Commander Palmer is the leader of them)