No. Nothing will be deleted. Likewise, nothing will be gained when/if you re-meet milestones.

I -doubt- it, but I can't promise. Even if you do lose them, I'm sure you'll find/trade for them again. They aren't rare. You should be fine. If you're really worried, give them to a friend to hold while you delete your achievements then take them back.

Since we're in topic, did anyone here who used this program have had problems with the VAC security? I wanted to use it too at one point, but a lot of people warned me of that.

>>8739
You will only get VAC'd if you run SAM while TF2 is running. It should be safe to use it if you don't have any games running, just run Steam.

However, I don't condone using SAM or other third party apps to alter your achievements. Because one way or another, they will find out what you did, and they have done so in the past. With the Announcer holding everyone's weapons they got via cheating the milestones for two weeks. Your account may get flagged.

The risk is up to you.

Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item.

so you can't restart your achievements when you get them all (or most at least). I don't want any more items, I just wanna go for them again

Play the Beta and you can get all of them again. Not the exact same thing, but there's no chance of getting VAC banned.