01Core mechanic
Merge matching vehicles, arrange the formation and stop each advancing road wave.
02How a run ends
Spending every resource immediately leaves the formation unable to answer a faster unit, new lane or stronger wave.
03Opening plan
Inspect lanes, costs and unit roles first; build one dependable defense and keep a small reserve for the first surprise.
04Common mistake
Avoid upgrading everything equally. Invest in the position or production step that is limiting the whole plan.
05Advanced tip
Upgrade the busiest position first instead of improving everything equally.