Pro:
+ cute art style
+ good music
+ interesting builds with overall decent variety
+ relatively forgiving hitboxes

Contra:
- a few useless weapons and characters
- certain enemies (and all bosses) are damage sponges
- annoying projectile-spitting enemies
- unreasonably hard at A3 and above (you need to clear A10 to unlock the last character)

Overall, I can recommend this game for a few rounds of short-lived fun. Can't really complain at this price point.