Rather than use a trainer i would go for an individual cheat if you are really stuck. That way you don't need to download or install any dubious software. Most pc games have several cheat codes that you just type into the console to give you maximum health or god mode etc,just to get you out of trouble. And as soon as you get past the tricky bit,you can deactivate it. No harm done.(only to your conscience) I confess to using god mode in Far cry once as one part was way too hard for me.Oh, the shame of it.)O:!