Achilles pain

To that, I would just add that it's all connected together.  Tight hamstrings can feed tight calf muscles, too.  Stay stretched, calf muscles and hamstrings.  Several times a day.  Good, deep stretching as much as possible, esp. before going to bed.  Try to keep your toes from pointing down when you sleep, which will cause the calf muscles to contract more.  There's some sort of boot you can wear at night if this is a problem -- it will keep your foot at more of a right angle.  Roll your arches with a ball of some sort between your foot and the ground -- I use a tennis ball and put one foot on top of the other when doing it for added pressure.  Some people prefer a harder ball such as a golf ball for rolling their arches.

For the PF, always wear shoes with good support, always.  When you get up in the morning, go straight into shoes -- never walk in bare feet at all or non-arch supported footwear.  I use old running shoes around the house that I washed up and took the laces out of.  It takes a while for your heels to stop hurting, but if you do this, and stretch repeatedly throughout the day, you should start to feel some relief within several days to a week or so.

i agree with stretching, and that everything is connected.  example: i had a tight glutes for a while and eventually got severe knee pain as the result; little time spent sitting on the foam roller and all was well.

you could also look into products like KT Tape for a little localized relief.

rolling.

eccentric heel drops.

go easy on them- i.e. rest.

I don't believe that ice is the right treatment for tendons that feel 'tight'

I had a similar problem in 2011 which morphed in to full on tendinosis (slight tears on Achilles, more so on my left than right). I had to rehab it for a good four months. I did the rolling, the icing, the rehab, and the eccentric heel drops. Of everything I have studied and read up on the subject and read from posts on multiple websites, the heel drops are the things that work the best. I stopped doing them for a while and I could feel that twinge come back. It goes away after a couple weeks when I do the heel drops. Also, I like to make sure I do box jumps (side to side, angles and up and backs) before I start running.