2501 Hmmm define “good”. Ender Lilies was a decent success, mainly driven by social network recommendations and positive Early Access impressions, so it definitely found a welcoming audience (especially many people digging the setting and the soundtrack).
From my perspective, Ender Lilies has many interesting ideas and the difficulty is balanced well enough, but the level design is lacking, which I find a big issue for a Metroidvania, and I find the good ideas not developed or questioned enough to make for something unique and inspiring in the genre.
It’s probably a game I’d recommend to people who were interested by the sales pitch of Hollow Knight but found some aspects too frustrating: maybe there was too much exploration, too much backtracking, too tough of a challenge near the end, punishing deaths against Bosses, etc. For those people, Ender Lilies should be a more enjoyable, Diet Coke version of that experience.
That being said, the team clearly has talent and a vision. So I would be rather hopeful about their chances regarding a solid dark tactical game focused on a small core squad. I worry that it faces steep competition in the genre and a crowded release plate overall.