The L emblem does not exist in Paper Mario. There is one hidden in Paper Mario: The Thousand Year Door, however. It can be found in Poshley Sanctum go into the painting and do exactly what you did in the other room in there
In The Thousand-Year Door, you can buy it from the shady dealer with the large mustache in Rogueport. I don't know of any being findable on the field like the 'L' Emblem badge.
i think you have to get a 10 killstreak without using any killstreaks
To get the mw2 nuke emblem you have to get 10 nukes OVER 9000 joke, 10
get 2500 headshots
yes
Get 25 AC-130s
There is no rhino emblem. Unless you are talking about the Ghost emblem, in that case it would be reaching 10th Prestige.
call in 25
10000 headshots with snipers
The hyena...You have to get 50 kills with a RPG.
Complete ak-47 veteran2
Get the game winning kill with a Riot Shield.
kill 2 people with claymors 50times
play team deathmatch and get the top score