BETA update v.2.0

[b]Change logs[/b] [b]Arena mode[/b] [list] [*] New gamemode! Arena mode - Survive against waves of Geometry Dabs enemies for as long as you can. Max 20 waves. [*] New enemy introduced - GDMod. [*] 2 maps for arena mode - New map called "arena" and another map called prisonbreak, which is a changed version of the main area in level 1: Prisonbreak. [/list] [b]Keypad[/b] [list] [*] You can now remove the previous digit you put with backspace. [/list] [b]Steam[/b] [list] [*] Updated the steam store to include references to arena mode. [/list]