[quote=@Wei Phoenix]
From someone like Hulk or Thor?  In that regard then you're going to want your shield to be able to withstand 100 tons.  That being said it's going to take a lot to break it and activate Escape.  Guns won't be a problem at all.
[/quote]

Well, at max I would guess. SH13FT is a very useful source for energy, and if you used adrenaline shots and SH13FT she would be able to withstand Hulks and Thor's punch in one hit without focus.