The problem with the icons is not that they are difficult to understand (other than the difference between blood and health since other games usually use one or the other, interchangeably), the problem is that the icons are "high energy" and thus distracting. A more simplistic design would be preferable.
There are some a couple of things that the new icons have right. Grouping together icons from similar systems (health, survival, binary status icons like wetness and sickness) is great and makes it easier to understand the purpose of each icon. The low profile arrows are also great along with removing the color from the arrows. The energy and hydration icons should be side by side, though.
There is a great post on the subreddit by /u/abbidabbi. Link here. abbidabbi points out that the icon design is inconsistent and thus chaotic. The icons need to be simple and informative with uniform artistic design between the icons.
