Balance update

A lot of reviews pointed out that some levels were too hard and way too fast for them. After some checks I change the difficulty a bit for some levels, full details below.

Changes:

• Buffed hard movement speed, 35% movement speed reduction instead of 45%
• Level 1: Increase load time
• Level 2: Increase load time and activation time
• Level 4: Reduce display time
• Level 5: Increase reaction time and load time
• Level 6: Increase activation time, reaction time and load time
• Level 8: Increase activation time and reaction time
• Level 9: Increase reaction time and activation time
• Level 12: Increase activation time
• Level 13: Increase activation time
• Level 15: Reduce block rotation speed
• Level 16: Increase activation time and reduced blue laser angle shift

Bug fixes:

• Fixed two achievements not showing up at all
• Fixed one achievement showing up too early
• Fixed second mode not showing up
• Fixed a missing laser block in level 12
• Fixed sound saturation when multiple blue lasers were shot

Thanks for playing the game and the prototype!