I'm thinking about buying and replaying this (played the original long ago, started to hate it after a while and uninstalled).
Are there cheats, like specific ones, that let you control some of the more annoying survival aspects (like sleep, food, sickness...)? Thank you!

It's a late reply, but maybe someone will find it useful.
You can access command panel with ~. It allows you to fly (which speeds up moving around greatly), you can turn on god mode, or you can change specific attributes of player character (health, hunger, infection, etc.). It's possible to add items too.