Just watched it this weekend. Man IDK what to say. There were little bits in there that had so much potential (like Thor asking his hammer to look after Jane...weird still but potentially good plot, Jane choosing to help save the Universe instead of her health, Thor's decision to spend his last moments with Jane instead of dealing with the God Butcher. Any of these plots would have been great to expand and explore.
Instead the whole movie felt like a huge joke. It didn't seem like there was any real threat or consequences or consequences of actions. Those that died didn't even seem to matter! You have all great actors and this is how you choose to use them? I can't say it was the worst Marvel movie but if definitely was not a good one. Hence 2 star is my vote.