here they are

unbreakable

fisnish a ranked team death match with out diying once

exterminator

kill 20 giant scorpions (thats what i did) in one public match

dino hunter

kill 20 dinos in one public match

massive battle

participate in a 6 on 6 player match

retribution

knife kill you rival (you will know who ur rival is he has orange amour)

buddy blow out

play a 8 on 8 private match

grab bag

kill one enemy,one dino,and yourself just for fun

i have 7/49

impaler ribbon

pin some one to a wall with the bow on campaign

co-op 2

finish co-op map 2

medal of citaiton

kill 100 enamys in ranked matches

arsenal

kill at least one person whith every wepon in the game

practily canadian

no idea i got it same time as thorn in side

thorn in side

kill the flag carrier five times in one ranked match

primitive wepons

kill 10 people in one player match with the knife or bow (bomb arrows dont count)

great round

finish a death match (free for all) with a battle rating of 100 or greater

games man

play a full round of each game type (not sure if it includes co-op) in player or private matches

crack shot

kill 5 enemys with head shots (only head shots) in one player match

arch nemisis

kill the same person 5 times in a row with out killing any 1 else in between

on my other xbox

dino dominace

knife kill 50 dinos in campaign

big game ribbon

who momma

(you manged to survive momma scarface)