oh, really? Why do you think it was anticlimatic?
The 2 main endings are about 2 strong life choices and last one not really, and in general you end up finding the 3rd ending last, so you leave with a less arousing feeling… but it’s fine! It matches the movement of the player character, and it made me smile as I thought “alright, that’s a way to avoid the normal ending indeed…”.
In other stories (e.g. Hunter x Hunter), you’d have two choices following the rules and the 3rd one would be to break the wall!