It's far from "too vague" but I'm not sure the special first game works because the least you get it the sooner you die and the least time you benefit from that slower pace to think... I don't know how to fix it, maybe make it replayable at will like a gamemode would be an easy fix, maybe there is a tricky balance trick to reverse that tendency... on the UX side to me the game is two details away from perfection:
- Since it's so esthetically pleasing and rythmically engaging I wish you could restart from a keypress to keep the flow alive from game to game rather than have to grab the mouse, and maybe have the game start with a faster pace when you do so because you are already warmed up from the previous game, with maybe a safety net to prevent missing the score screen when you beat the local highscore...
- There are keys perfectly aligned like the numpad keys on some keyboards, I wish i could use those, the best option would be to be able to map inputs however you want but I don't know how easy it is to do that with Godot, I'm completely new to it...