Bug fixes:

1. Tweaked sound manager to play overlapping sounds, fixes effects cutting off.
2. Fixed double damage bug by adding cooldown to enemy hits.

New stuff:

1. No safe lanes. Enemies spawn in all the lanes now, no more safe zone to hide in.
2. Objects pulse when passing between the day/night cycle.
3. Animated text for taking damage and collecting orbs.
4. Added sound for clearing stages.