how do you even progress, like which button do you press
In the main area, there are several "rooms", you start leftmost.
Skull left/right to change rooms (so to start left skull does nothing as it doesn't wrap around/loop).
Rooms from left to right:
1) Alchemy room (once you finish an area and get everything, you get 2 items that can make a toy by dragging things to the center).
2) Toy room (use toys after you make them by "alchemy")
3) Library, backstory and info on things you fight once you find a book in an area and fight it. Not really all that useful.
4) Teleporter, way to get out to fight and explore; the gameplay is reached from here.
5) Healing room, click skull to buy healing potions at 100 each. Heal is slow over time and free to 100(ish).
6) Wardrobe (change clothes once unlocked)
The bottom left skull opens menus depending where you are (or inventory if you're on the map).
"Home" in inventory from worldmap takes you back to room #1.
"Exit" in any room resets you to room 1, always. You don't just leave the menu. Which is somewhat annoying.
Returning to an area does not reset enemies; so you keep progress.
Fighting gets xp, gaining levels can heal but don't seem to do anything else.
Your "magic" skill is the bar that looks like a HP bar, you get a bit per kill and it kills all enemies when used (clearing the bar).
So IMO don't use it for 1 enemy, save for 2-3 if you can.
Healing is free, but time consuming at room 5.
Potions don't heal much and take a turn in battles to use, or can be used from inventory.
Now you know everything I know about the game after playing for a bit.
As for the game?
It's... something.