Heart Gate, Cat statue, and puzzle solution were supplied by "Things for humans", NOT created by me.
I was given a whitebox environment and asked to flesh it out for a first pass, with the expectation being that I would leave the gate and statues alone and help make the environment feel softer with a general gradient art style.
Unfortunately the project has been shelved for now, so I wasn't able to fill it up with a little more, maybe it'll be revived sometime in the future, fingers crossed.