There’s a thin line between hard and damn annoying, Eternal Daughter crosses it far too often. You have to time jumps and attacks perfectly, and you need an eye for pixel-exact movement too get through this game. Some people might like this kind of difficulty, but while I find it doable, I don’t enjoy it as much as a more balanced and forgiving gameplay.
Eternal Daughter is an exploration game of the genre defined by Castlevania /Metroid. ED has excellent graphics, every screen looks just damn good, and the world with its different races and neat enemy/boss designs is very well done. Also, despite of the difficulty, the game makes you want to try again and again. This game is heavily addictive, but expect too die a thousand times over and over (and you’ll curse the recoil when you get hit, which is far too strong and really, really annoying).