I looked through all 44 pages, and some said the trainer didnt disable achievements.
But quick question again, sorry if it really is answered:
1. Does it work still with steam?
2. Is achievements still getable while using trainer? If yes, im gonna buy Unlimited right away and use it
1. Yes the trainer functions perfectly with Steam.
2. The trainer does NOT interfere with either achievements or goals / goal-related perks.
The only thing (as of now) that will prevent earning achievements is opening the game's cheat console. You can still use cheats, but you'll need to immediately save and close the game, then restart.
Also, certain console commands such as "God Mode" are being reported to conflict with the trainer. Probably because two items are attempting to perform the same function at the same time.
tl;dr the trainer is safe concerning the two issues you listed.
It should be noted that CHU cannot guarantee that you'll be able to get achievements in game. This means that it may be working now, but could be disabled in the future by the developer. We see a developer disabling achievements as much less stressing than them shoving patches to make the trainer not work.
Two weeks ago I bought Fallout: New Vegas and instaled the latest trainer. Both were functioning smoothly until last night I began having game crashes (computer freezes with gray dots in lines overlaying the game view). The first time the crash occurred a couple of minutes after initializing the trainer. Subsequently I've tried the game several times with and without the trainer and it definitely appears to be induced by the trainer. I checked to see if Steam has put out a new update for the game, it hasn't, at least none that's listed, I've installted new video drivers and checked the validity of the game files, but the crash persists. Any suggestions?
Something has changed on your system within the time frame and most likely has to do with security software or anti-cheat technology by Valve or the game company.
Make sure that you have the trainer whitelisted in your AV and Firewall (alternatively temporarily disable them to make sure this is the cause). Also make sure that anti-cheating technology is disabled (these are usually installed as a Windows Service).