Hi, thanks for trying out my game !
I had to scrap some mechanics and stuggled with my time management for the jam.
I ended up using a basic next level => faster walk speed and spawn rate. The game will end up being litteraly impossible to clear since you wouldn't be fast enough to fill and serve drinks compared to the amount of customers.
Arcade games are supposed to offer you a challenge, but still be clearable in 1 credit (with enough practice !).
In it's current state, with this one you can't... ^^'
Have a good one ! o/