Content
- new room - incinerator (in Lab - 2nd level)
- new enemy - flame bot (spawns in incinerator) - has flamethrowers for hands
- weapons - 2 new weapons - revolver (shoots as fast as you can click) and firework launcher

Balancing
- increased enemy probability on 1st level

Bug fixes
- fixed silicon heaven achievement not unlocking
- fixed Linux version not booting up directly from steam
- fixed weapon choice UI not starting on the first weapon
- minor bug fixes