A small but important update today: I was able to identify the source of the performance issues that occurred during the battles and fix them. It should run smoothly now on any machine. 

Here's the full release notes for version 0.1.5:

Adjustments:

• Mousing over enemies will now explain their actions as well as their status symbols
• Added volume control to options in main menu and in-game menu

Bugfixes: 

• Fix performance issues during battles
  
• It is no longer possible to select the same die face for evolution and sacrifice
• Pressing SHIFT or middle mouse button no longer ends the player's turn
• Repeatedly pressing Escape or right mouse button on the camp/evolution screen does not cycle between evolution and camp/evo choice anymore.