As usually there are minor changes to art. I choose to change more code than visual aspects of the game becouse i think this is more interesting for me.
Here is list of some changes:
- Atackers cannot attack defenders that are behind them
- At start of level, in buttons there is now automaticly selected ‘Cactus’
- Added more tags ‘DestroyOnWin’ to objects to improve displaying level ended message
- Disabled adding defenders after level is ended
- Added ‘spawn_rate’ to spawner of attarckers, so diffrent lanes can have diffrent spawn rate of the same attackers
- Added sounds of dying defender and attacker
- Added sound of star birth
- Added ‘Escape’ functionality on PC and ‘Back’ functionality on Android
- Added new type of attacker - ‘Vendor’
- Added multiple lvls with own characteristic
- Modified clips volume in ‘Audacity’
- Added difficulty modifier - this will change the spawn rate of enemies
As usually all codes are on my git repo. Look if you want 
Game was made in unity 5
Here is link to the game:
GlitchGarden
GlitchGarden on GameJolt
Here is link to my repository on GitHub:
GitHub