How do you get the Explorer and Beta Tester achievements? Played the game a good several times and can't seem tio figure out what does the job. Anyone who sees this and got them, would REALLY appreciate some assistance.

the ending achievement is not unlocking for me

Does anybody know how to get these two achievements? o Distrustful I already tried to give the guy on the door the negative answer, but nothing happened. o Explorer no clue how to get this one. Thank you in advance.

So I hav no clue what triggers it becaude I chose different dialogue options each time, but when the radio goes off and you hear the sound of chewing meat the vamera stays lockes onto the radio. Nothing I do can break me loose to finish the story, edit: I figured out the cause. When answering the radio for that particular exchange, it locks if you do so while crouched....