I started playing on Mediumcore character about a week ago, and in this time I got the first invasion... Everything I can say - if you drop your items in the Underground/Dungeon/Underworld - it's not a big problem to get your items back, but when it comes to invasions, uh.. If you die once, and...
It also happened in my world! I find this as an interesting and challenging trap for myself.
Interesting (until devs fixed this) because of the farming capabilities.
Challenging because of... Escaping from Unicorns in the Underground Cave with no items or weapons!