Relating to the Time Freeze option - I spoke to MrAntiFun today about this over steam, he told me that A game that depends on time, for example, when you change from day to night should not really be changed considering that tampering with it could cause the game to crash consistently. I am sure at some point MrAntiFun will reply to this with a similar comment, but he did say that he would look into it and maybe find a way around it or another solution. As far as stealth missions go, there are guides online if you spend the time to search for them that will give you a quick demonstration on how to complete the tissue sample mission quickly and efficiently. It's just a suggestion is all, I mean if you want to just ask MAF for a ghost mode, but I honestly think making a ghost mode for a single mission is a waste of time.