heres a list of side quests and secrets that i know have been discovered, there are still more to find so if you find any dont forget to share!

the the centre area theres 3 shootable little cubes,
1. in on the doors to the left of the simon says minigame.
2. on the crystal behind the double points buyable.
3. on a root close to the jump pad leading to spawn

shooting all 3 completes this short side quest, the reward is hard to miss

in the well area there are 3 valves that can be turned via meleeing them. once all 3 are turned a water geyser will unlock near the jump pad that takes you to the top with a short cooldown
1. under the very bottom of the stairs (prone to hit it)
2. part way up the stairs, slightly above level with the fireplace in the wall
3. at the very top, at the very end of the path on top of the wall

after 100 total bad omens you unlock the good omen mask, wearing it makes you immune to any bad omen the wearer receives