Ok hello! I don't speak german but I've tried out your demo and was impressed by the graphics
Though I'm here to offer constructive criticism... ok firstly when the characters talk they IMHO look like they are chewing on something or trying to do a impression of POB
Ok now for the serious side...
Right clicking on certain items down the bottom annoyed the hell out of me, cause I expected a description of some kind, only the newspaper offered anything other than random...
The icons as previously mentioned are all messed up, the magnifying glass is for looking at something in a sherlock holmes kinda way... the pick me up icon obviously means u can pick the damn thing up.... and the cog is something u can fiddle with... the cog on the barstools confuses the hell out of me... Also I need to mention the laxatives puzzle... the way it's dropped into the glass is very cheap... and obviously the bloke would come back and punch his lights out... I see there is no way to get to the bathroom in the demo... which I presume is why the soap is on the bar??? Some nice music and FX... though I was surprised I could hear what the bloke was doing in the toilet
However for what it is, it's bloody good... so well done to ya! Can't w8 to see the final version!