Can anyone help me to comment on my itinery ?

Your itinerary is too detailed for me to be able to follow it sufficiently to give you an opinion about whether it's "too rushed." This is also largely a matter of your travel style and preferences.

But I can suggest a method you can use to help you answer your question, specifically to determine whether you have allowed sufficiently for the travel times between your destinations:

go to this train schedule website

input your train schedule for a given day: for example, your day 3, input Fussen to Salzburg and note the station to station train time (doesn't include getting to the station, waiting for the train, etc) for Fussen to Salzburg. Then do the same for Salzburg to Hallstatt, note the time.

After you have done the above, it should become apparent to you whether the schedule is too rushed or okay to suit your travel style.

You don't need a separate Swiss pass or card in addition to the Eurail pass in Switzerland. Your pass will cover fares on most trains in Switzerland. Note, however, that the Eurail pass will only cover 25% of the fares from the Interlaken Ost train station into Lauterbrunnen and up to the Jungfrau. You will also pay a reservation fee on the Glacier Express.

Hello ng,

I think this itinerary is WAY too busy. Until Paris, you're spending a night someplace, leaving the next day, spending a night there, leaving the next day etc. You won't always be able to travel early in the morning, nor will you necessarily get to your next destination in time to do anything. I would suggest picking 3-5 places you want to spend time in, look at the train schedules going from 1 place to the next, and work from there.

Yep, what Elaine said.

You don't seem to be allowing ANY time for travel from one place to another. You're not going to be able to magically beam yourself from one hotel to another if a different city...

If you really have 2 weeks (that is, 14 full days, not counting the day you arrive or the day you depart), then you should probably pick no more than 3 or 4 places. Every time you move from one location to another, you will use up anywhere from half a day (if you're lucky, efficient, and things beyond your control like transportation schedules, etc. all go perfectly), more likely the better part of a day. All the minor details of getting yourself form one place to another take time - more time than you think they will.