Day 4

Re-thought the game mechanic and added a concept of time. You now start with 60 seconds and you get to choose how much you want to max spend on each level. When time runs out you have to re-start.

Started to add a shop level where the idea is that you can buy permanent upgrades (eg start with more time, more arrows etc).

Besides this I worked on the platform level, added the difficulty increase with increase bullet speed and also bouncier bullets.