Lone wolf achievments halo 3?

[riddick]

What are they and how do I get them

 

[Shadow Slayer63]

two for one- kill 2 people with spartan laser at once
triple kill and overkill- 3/4 kills within 4 seconds of each other
Lee R. Wilson Memorial - stick 5 people in one match
killing frenzy- 10 kills without dying
Steppin Razor- 3 kills within 4 seconds of each other using energy sword
Up close and personal- 5 melee kills in one match
Mongoose Mowdown - splatter someone with the mongoose

 

[Dillon]

Steppin razor is the hardest one... you would probably get it on construct camping in the room in between the two lifts