Minor content updates and bug fixes

• Death animation added to butterflies (on the off chance you attack them, but you wouldn't)
• Alien encounter??!?
• Player portraits updated to include a bit of an inner margin
• Locations of collectables tweaked so you need to visit certain areas, it's a little easier to complete, a little harder to '100%' it
• A few extra monsters added
• Bug fixes, variables cleared when starting a new game after making progress in previous game, water in midlevel no longer causing issues