Version 1.3

Hi! I made a new 1.3 version. I made 4 new Danger Zone levels with new mechanic - checkpoint. Also I changed sounds in game(they're 8-bit styled now). And what else I changed the game page a little (although this is not included in the update, but I talked about it).

Join my discord server for more updates:  https://discord.gg/xzJGRbBPWN