Added Level 2 and "restart level"-button

Still heavily working on it and learning stuff. Yea, I do plan to add animations, audio and all that jazz at some point.

Bloodsplatter FX Pack" © 2020 Mia Rosado (BlueRoseSonata), CC-BY 4.0 (thanks for the lovely assets, you'll get proper attribution once I figured out how to make a proper "Credits" Screen <3)