Russian added to game plus updates!

Patch notes; Fixed typo in English text. Improved some more unfair enemy placements. Fixed some game crashes in survival mode. Fixed an enemy getting stuck in a wall in one of the survival stages. Display stage number at the start of each survival stage. Fixed the game incorrectly showing a time bonus icon when killing one of the flying enemies that appear in survival mode when you take a long time to clear the stage. Fixed broken sound effect for using keys. Added more monster sound effects. Fixed some monster AI bugs. Fixed display bug on map screen in survival mode. Made puzzle in The Heart a bit clearer by only respawning the clay pot if it's really necessary. Fixed collision bug related to throwing, which also fixes the wall climbing exploit. Fixed a bug in the map screen preventing display of one of the upgrade icons even when the upgrade was collected. Added Russian localization to game.