The Hidden Forest

i did a normal mob count in takish hiz and cleared the entire zone and only got credit for 18. i then did a assasination in takish hiz, and killed boss and again didnt get credit for it...any ideas as to why this is happening?

last night i did a normal slaughter , only counted 1 of 60 kills. even with 99% of the zone dead.

pretty sure it still gave me my 30 points though.