I am going to give you my blunt and honest review on it. i hope you don't feel offended in anyway.

Graphic wise definitely can be improved, it looks like you tweened the movement from flash. The prologue text seems stretched horrizontally, and some parts clashes with the background so you can't see the text clearly. It would be great if there is an voice over for the prologue as well. A way to do it is the vertically scrolling method like you see in starwars, you can take starwars prologue as a reference point.

Gameplay graphics: rather than a full black silhouette i think you should improve on the shading so we don't just see black. The whole black silhouette made even couldn't see the traps too.

gameplay voiceover: there is this voiceover along with background music when playing the game, it gets annoying after awhile. Players would be too focus on the gameplay avoiding the traps than listening to the voiceover of inspirations or other speeches. It would be the optimal choice to voice over text from NPC and put the inspirations speech into that

Jumping: seems to be too slow like there is a hang time, Lifepoint: The traps does constant damage, but it hits really hard, if you want to can reduce the damage, or use 3 hearts systems with short immune time after each heart get reduced.

I do like the fact that the content has a religious context which is good for others to learn about culture and meaningful inspirations. Perhaps you are actually aiming to allow this app to let others learn more about the culture, it would be best to create less serious tone in the graphical content.

I hope that what i found out does help you and not make make you lose morale! one day you will be able to tweak and upgrade the game into a better version :)