Not much in it. Main danger from the Portugese seems to be down the right and crosses from Cedric. Collins (in particular) has defended the crosses well but eventually Ronaldo will get his head on one so Wales need to get more of the ball really. There's always the danger that Ronaldo will spark into life, and Renato Sanches catches the eye, but that's been the main danger so far. Maybe ask Bale to try to attack down that wing and play on the space that should be there or at least force their fullback back a bit.
Collins and King have done pretty well. I wouldn't be surprised to see Vokes on for HRK to try to give the Portugese defence a different type of challenge at some point in the second half and if Portugal do score then Jonny Williams in for a more defensive midfielder will likely happen too.
That's my half-time commentary. Really enjoying this even if it is cagey and I am a nervous wreck! I can only imagine how the Welsh fans feel.