Try doing that in MP against real people and see how long you last, my guess would be not very long.
It was exactly the same as the system used in Chronicles of Riddick:Escape from Butcher Bay.
Well it's pretty obvious I'm talking about single player because I mentioned AI.
But I don't understand what perspective you're speaking from, are you saying you shouldn't advance on an enemy wielding long range weapons or you shouldn't simply sit back and pick them off from long range? Either way it depends entirely on the game, the structure of the map and so on.
And Halo is as much a MP game as it is a SP game if not more.
I'm speaking from my own perspective from playing the game for 3 years. If you sit back while somebody has got a sniper they will eventually pick you off when you least expect it. So I always make sure I get in their face so they panic and try to kill me with the sniper with out a scope, which the majority of the time misses me.
And this is where the regenerating health comes into play because it means you can get close even if you've been shot meaning you then dont have to worry about having to fart around looking for health, so once your shields back you can just jump back into the action. It makes it a more fast paced and enjoyable game.
Resistance: Fall of Man defines generic for me.
It's soul-less and has no feeling or emotion put into it. It's very much a paint-by-numbers shooter.
Resistance is as generic as Halo.
Theres not many areas though really. Ive played through Resistance, Halo 1-3 enough times and Halo really isn't that ground breaking, its on the same level as Resistance.
Also bullseyes, shielding features, hybrid health system, sixaxis implementation - shaking off of enemies, extinguishing self. Chimera characteristics such as rage mode, overheating aspects etc.