More important changes and fixes:
Reworked recorder to fix bugs in it
Made loading screen unified with level loading
Removed character falling to the floor when finding the next level
Recreated the map in level 3 to make it easier to read and to make level 3 easier
Added light to checkpoint button to make it easier to see
Fixed visual bug with clients and rising lava at the end of level 7
Fixed a bug in level 3 where you clip through the elevator floor after it comes back up
Changed notes so that multiple players can view them at the same time
Added indicating "battery" to level 2 timerbutton

Other less important:
Changed level 4 atmosphere
Optimized some entity memory usage
Optimized player character memory usage
Lowered alarm volume
Fixed some bug with the pipe puzzle on level 6
Changed appearance of options and controls because of data loss
Changed appearance of spectator screen
Made first level change more reliable