This game is simple, but it explores the theme in a less obvious way in my opinion. A straightforward interpretation would mean playing as enemies, but here we play as a third entity that is neither the hero nor enemies.
I do feel like the theme is quite limiting this time, seeing many games do the same thing like reversed tower defense, but oh well. You did well on that front nonetheless.
As for the gameplay itself, it’s hard to play with a bad touchpad (i.e. without a mouse), so I had to grab my mouse to do play it properly. :) I like the low-health mechanic, but most of the time I just bumped the goblin with my healthbar (sometimes I did that on accident).
Cheers.