Well, I've never had a trainer block achievements, but what I asked was if the console cheats disable achievements not a trainer.
Same here out of the 100's of trainers I've used over many years none of them ever blocked any Achievements!I personally don't care if anyone gets Achievements buy cheating as long as they are just playing against the computer, SP mode.
still waiting on steam to get it out on sale here in the UK,
the store page is accessible but no buying button xD
Seriously, do what most people I know did and buy it from GamersGate:
www.gamersgate.com/DD-POSTAL3/postal-3
That is a huge stuff up on Steam account that they seem to be taking their sweet ass time fixing..