Crucible is a World of Tanks challenge system with mission series at Fighter, Elite, or Ace difficulty. This boost completes the series you select in Random Battles (Tier VI–XI), using Shields as failure insurance as shown in the live client. It is not a WN8 package and not an Onslaught rank climb.

They are the three Crucible series difficulty grades in the client. Higher grades are harder and cost more per series on this page (Fighter baseline, then Elite and Ace). Pick the type that matches the series you want completed — we do not mix types inside one series count unless support agrees separately.

Price is per series: choose quantity (1–10) and Mission type. Fighter uses the catalog base rate; Elite and Ace add a per-series surcharge shown in the calculator. Execution speed and add-ons (Priority, Specific time, replays, screenshots) are optional and change the Total.

You keep rewards from completing the ordered series as they appear in the current client for that series. Reward pools rotate and can include unique items — we do not promise a fixed Ace cosmetic or a specific loot list across rotations. Gold restarts / extra attempts are handled only if agreed in the order chat.

Each series has a limited number of Shields. Failing a mission costs one Shield; the final mission must succeed before Shields run out. Every stage is completed in a single Random Battle. Only one Crucible series can be active at a time, and an activated series cannot be paused — we follow live client rules.

Usually stay offline while the booster runs the series, unless you ordered Specific time and agreed windows in chat. Starting another Crucible series yourself or playing mid-order can break Shields progress and delay delivery.