Abandoned Basement

You and your group woke up in an abandoned basement. It turns out you've been abducted and have no idea what is going on. All you know is that the kidnapper has left the scene, so you'd better seize this opportunity to get out. The hostage before you tried to escape but was unsuccessful. However, they left a trail of hidden clues in the hopes that the next person will have better luck. Find them, use them and make your way out. But be quick, the clock is ticking!