I used cheatengine, im not as familiar with cosmos's setup, so its easier for me with CE. You will need some expertise with the app though, otherwise you wont have much chance. Sorry if it sounds complicated, but its 2nd nature to me now.
All the values are close to each other. The easiest value to search for is energy, since you get an item to give you max 200 energy, so seach for 100 float, then equip item, filter for 200, take item off etc, filter till you get a single value. Then browse the memory region and 2 hex values values away is the current value, you can use calculator app on windows to convert the hex values for things. Each stat is 4-5 lines inbetween each set of 2 values.
So 100 has a float value of 0000C842 and you will see there are various values nearby with that address, then there is a gap of 00000000 then another value which is the current. Values that are constantly dropping will show in red, these will most likly be your food and water since they constantly change, where as hp and fatigue wont change much, but you could get in a fight or somethign to see hp drop, and check which value changed.
Im trying to create a perfect savegame i can upload with all skills, credits, stats, upgrades's etc, so you dont have to do this for yourself, i'll upload it asap.