You're probably going to die...like a lot. But there is a lot you can do to prevent this and get a good start. (also remember you can't pickup items unless you right click on the item or crouch) CHOOSE YOUR BIOME WISELY- With the new temperature and heat mechanics along with bio...
Sorry I can't say whether this is a new issue or not as I've just recently started playing RLCraft. I'll take your advice and contact the modpack creator about the issue to see if it can get fixed. Thanks for your consideration friend. ...