Not being able to develop the game in 48h, we took two more days to fix some things and here's the result.
Based on the "only one" theme, in Keychain your survival depends on how you use the keys you find.
CONTROLS
WASD = Move
E = Interact
TAB = Extract keychain
UP/DOWN arrows = Switch key
SHIFT = Run
As this is a 4-days game, it does not have save features and bugs could occur. Thanks for the patience and for playing, keep the gamejam spirit strong!
Have fun!
Amazing job bro, keep up the good work! Here is my first look

Good but too repetitive
A new interesting popular game!