FIELD NOTE 01
What the official tree shows
Official media presents a connected, multi-branch upgrade interface. That structure matters because purchases may sit behind earlier nodes or serve distinct systems.
A single flat tier list loses dependency and timing context. Follow the branch that addresses the current constraint, then compare the visible next node against alternatives in the same role.

FIELD NOTE 02
Navigate with intent
The June official update names gamepad improvements for upgrade-tree navigation. That is evidence of supported interaction work in the demo cycle, not a guarantee about every controller on the launch build.
Before buying, note prerequisites, what the node changes and whether the benefit appears immediately or unlocks a later choice.
- Branch purpose
- Visible prerequisite
- Current and next value
- Cost
- System bottleneck
FIELD NOTE 03
How this becomes a current database
Each node needs an exact current name, cost, effect, prerequisite, cap if any, source and verification date. A screenshot alone is not enough when a value cannot be read confidently.
Individual upgrade pages remain reserved unless a node has a real player problem and enough unique explanation to pass the promotion score.
FIELD NOTE 04
Completion targets and dependency graph
Completionist proves that all upgrades form a finite purchase target; Maximum Suckage, Jacked and Filtration Amplification anchor the vacuum, jackhammer and air-filter branches. They do not reveal unseen nodes or dependency edges.
The prepared model records node IDs, exact labels, branch, prerequisite IDs, effect, current cost, cap, source, build and verification date. A visual similarity to Demo media is not enough to mark a value unchanged.
FIELD NOTE 05
What launch confirms—and what it does not
The official full-release announcement promises tons of new upgrades and abilities beyond the Demo. That confirms a larger live progression space, while the current Completionist achievement proves it is a finite purchase target.
Neither source publishes the complete launch tree, exact node labels, costs, effects or dependencies. The prepared Best Upgrades page therefore remains noindex rather than turning a broad launch promise into a ranking.
EVIDENCE LOG