Imp of The Sun - Playthrough Part 5 (Ending)

After finding the rest of the missing collectables and upgrading NIn's abilities, I had to complete 4 challenges in the Underground in order to reassemble the spear to challenge the Moon. Those were pretty tricky and would require some pretty quick reactions and the utilisation of all of the skills you gathered so far. Then Nin faced what turned out to be a fellow imp sent by the Moon. The battle against her is pretty challenging, but once you learn her patterns it's not too bad. You then get a happy ending of the Sun shining on the land again and humanity being restored. The Moon Imp even finds the body of Nin in something of a teaser for future games. You then unlock a special New Game+ mode called Eclipse Mode. You start with all your abilities and found items (but not upgrades), but the platforming and enemies are harder. It also seems that there's a weird time loop where there's a level of self awareness in the characters that this has happened before, giving it the potential for an interesting alternate ending.