Tier	Priority	Why it matters
S	Rebirth when the next run is clearly faster	Permanent multipliers compound every future step. Do not sit too long in a slow run once rebirth progress is ready.
S	Keep Shrink cubes moving	Shrink gain is the core snowball. If a cube upgrade noticeably changes your per-step gain, it beats cosmetic spending.
A	Use AutoFarm for idle windows	Passive progress keeps the simulator moving when you are not actively steering through gates.
A	Target the next gate, not a random size number	Gates convert shrink progress into Wins, and Wins feed the next upgrade cycle.
B	Long manual walking without reinvestment	Walking matters, but unspent Wins slow the loop. Reinvest first, then grind.