You can get all medals just by playing the arrow dodging mini. If you choose to play competitive and make sure it shows at least 2 players online (a bug makes it 2x the actual amount) you will disconnect after a while and it still counts as a 'win'. You can rank up that way. If it shows 0 players online you wont disconnect automatically and may need to start the game again.
Sadly, even with someone to play with the actual game wont start. It just shows a 4 instead of a 2. I tested it with someone else but you cannot get past the arrow dodging mini so I have no idea of how the actual game is like.
You can get gold fast by dodging arrows and pulling gachas was fun :)