Good but too many gameplay bugs

I like this game a lot but have had to replay levels too many times due to bugs. Some of the achievements dont activate (how can I be on level 13 and not have the achievement for completing level 1?) and I have had to restart levels because I put down an item but couldnt pick it back up again. Ive just finished level 13 and I cant find one last item which Im pretty sure is bugged also. I still recommend the game but be warned youll run into some bugs. On the plus side Ive never had it crash. The graphics, music and controls are excellent.

ninjabt about Phantom P.I.