Quick answer
Upgrade the system you use reliably, not the one with the largest theoretical payoff. Sanctite is a progression resource, and version 1.0.3c increased its drops globally. That change makes launch-day farming advice a poor basis for fixed cost or route claims.
Diagnose before spending
- Attempts end too quickly: prioritize a survivability improvement that creates more learning time.
- Safe openings do too little: improve the weapon or skill used in those confirmed windows.
- Resources sit unused: invest in the option you can activate consistently rather than saving indefinitely.
- A route remains difficult: verify whether the answer is execution, exploration, or a later movement tool before buying unrelated power.
Upgrade one variable, revisit the same encounter, and compare the result. Changing weapon, Rune package, and skill at once makes the benefit impossible to isolate.
Keep patch context
Official launch-week notes changed drops and fixed several progression interactions. Update before beginning a long resource run, and check whether an apparent lockout is already addressed. The official news feed is authoritative for change history; SteamDB is useful for finding the corresponding build record.
This is a prioritization framework, not a complete cost table. Exact nodes, prices, and balance values should be read from the live version 1.0.3c menus.