- Changed gameplay to wave based. Each wave has a feature (for example: increased armor, regen, etc.)
- All turrets and weapons now can be upgraded to level 3 and have a special feature (lasergun - paththrough armor, railgun - big damage on one creature, etc.) Upgrades also gives unique stats.
- Removed blue skull (spread shot). Now it's can only be obtained by specific turrets
- Added healthbars
Source: Steam Community (opens in a new tab)