Cool! Just got into the game. I get that you guys are working at your pace so feel no pressure from me with these notes.
V0.2 does not have the gallery available for the new opponents (both game over and animations).
A level-select would be nice or a way to revisit older opponents.
A couple unit ideas (you guys are the developers, you have a vision and a plan I might not see). If you guys are still going 1-1 with PvZ plants. With the new night level, I was expecting puffshrooms and scaredyshrooms (obviously each unit has unique animations for each enemy it's gonna take a while). As an idea since it's fantasy theme, puffshrooms can be dagger-throwing rogues. Low HP, Low damage, Low range, makes sense. Scaredyshroom is a garbage plant in PvZ but if you want to implement it, maybe the unit literally jerks off when the opponents get close instead of hiding.
I'm have high hopes for the future. Take your time.