I can assure you I do not wallhack,

does this demo reflects the person recording system?

because where I was alleged "walling" it seemed really glitchy

i however remember killing the people i "didnt" see

which was one person, all i know is when i teleported up a, teammate just died so I assumed the ct was still around... if you look closely there is a shadow in the corner of the little building of his body

and then

when i killed chun i didn't know he was there i just happen to be looking in that area when my teammate died thats when i started shooting (you can also see in the vid I was shooting my team mate because I wasn't sure)