This one is easy, being forced to use visual studio! In fact I made one or two rants about it.

To top it off using NuGet as a pm was also not a great experience to say the least.

Luckily I was not alone and my team agreed and we rewrote the entire legacy code in Java... A much much better experience!

So that was my worst experience.. My best experience was that I started my first big non-school related project and I am super excited!!