Everyone’s got that one thing they’re good at in Halo.
I’m good at sniping.
I also am talented with the sniper. Snipers ftw.
driving around in big team
Driving. Especially for special modes or crowded maps.
I can snipe people out of warthogs (gunner and driver) and ghost in 1 shot but become church under any other situation.
Very Good
If we meet online I hope I’m on your team.
I’m great at driving warthogs so teammates can get a better shot and I’m a beast with the BR and AR usually having both its may seem like an odd combo but I can take out any number of Spartans that I see. I’m more of a midrange fighter but I can get some headshots with the sniper. If you give me a shotgun then its is basically guaranteed we will take the lead.
Close Quarters. SMG, Shotgun and AR all day long. And let’s not forget good old beat downs.
Assassination! I just sneak around with my Active Camp backstabbin’ dudes. I can also wreck in any air vehicle (Hornet especially).
Surviving. I’m not about getting the most kills or being the best player anymore. I just want to play realistically and try to survive, which is something I’m really good at doing. And I always try to get at least 12 kills.
Sneaking behind ennemy lines and causing a disaster. Also not dying with a power weapon in my hands, thus giving it to the ennemy.
close quarters. I’m also good with a battle rifle. And the sniper, apparently, as i’ve found out in may/june
going exactly the other way around than my team is going, if they go right and are fighting in the right part of the map i go left, take out some loose ends around there and become the element of surprise when the rest of the other team is engaging, also sniping too.
Driving
Vehicle turret
Grenades
I can be decently good with most precision weapons and skills when I am in the moment, but I can be really good at decimating an entire team with a sniper. I am not a good quickscoper at all in Halo unless I am super warmed up and in the moment, but some games I am nearly unstoppable with it. Also, I am pretty good at juking people out around obstacles sometimes. Its hilarious 
Same thing in Destiny…but in Destiny PvP I am a monstrous sniper.
Spartan Laser
CQC, mainly.
Admiring the art design and getting assassinated for it
I don’t think I really particularly excel in anything, but I swear, my friend has godly grenade placement. You could be on the other side of the map, and he’d throw a grenade, have it bounce off the geometry a few times, and have it land right at your feet.
I’m not sure this belongs in this forum section…
But I don’t think I have a specific one: I am good at everything.