The wave buy order is the single most important reference for ST Blockade Battlefront Roblox progression. It defines exactly when to spend Cen on each Titan from wave 1 through wave 90 Hell Wave. Follow this order during Endless Mode runs and verify pacing with the Cen calculator. Total standard build cost: 26,450 Cen across all purchases through wave 75, with waves 76–90 reserved for maxing remaining upgrades before Dr. Toilet.
Complete Buy Order Table
| Waves | Purchase | Cost | Cumulative Cen |
|---|---|---|---|
| 1–5 | Titan Cameraman | 350 | 350 |
| 6–15 | Titan Speakerman | 900 | 1,250 |
| 16–20 | Save Cen — no purchases | 0 | 1,250 |
| 21–28 | Upgrade Titan Cameraman | 2,500 | 3,750 |
| 29–35 | Upgrade Titan Speakerman | 3,200 | 6,950 |
| 36–45 | Titan TV Man | 3,800 | 10,750 |
| 46–55 | Titan Cineman | 4,200 | 14,950 |
| 56–65 | Upgrade Titan TV Man | 6,500 | 21,450 |
| 66–75 | Titan Drill Man | 5,000 | 26,450 |
| 76–90 | Max remaining upgrades → Hell Wave | Variable | 26,450+ |
Phase 1 — Waves 1 Through 20
Purchase Titan Cameraman immediately at wave 1 for 350 Cen — this is non-negotiable. At wave 6, buy Titan Speakerman for 900 Cen (1,250 cumulative). Waves 16–20 are the critical save window: enemy scaling is low and Cen income is rising, so bank everything for the wave 21 Cameraman upgrade. Players who buy early upgrades or weapons during this window arrive at wave 21 with insufficient Cen and fail the wave 25 wall. If behind on Cen, farm waves 18–20 repeatedly — the income per minute exceeds the cost of one extra farming cycle.
Phase 2 — Waves 21 Through 55
The wave 21 Cameraman upgrade (2,500 Cen) is the first major power spike. After purchasing, push to wave 29 for the Speakerman upgrade (3,200 Cen, 6,950 cumulative). Waves 25–50 are your best Cen farming window — see the farming guide for optimal stop-farming thresholds. Buy Titan TV Man before wave 36 (3,800 Cen) and Titan Cineman before wave 46 (4,200 Cen). These mid-game purchases align with the tier list A and S rankings and cover the multi-lane boss pressure that defines waves 36–55.
Phase 3 — Waves 56 Through 90
Upgrade Titan TV Man at wave 56 for 6,500 Cen — the most expensive single purchase in the buy order. This upgrade is mandatory for boss enrage survival in Nightmare Mode and for pre-Hell Wave DPS checks. Buy Titan Drill Man at wave 66 (5,000 Cen) for late-game burst. Waves 76–90 are upgrade-maxing and Hell Wave preparation: verify all purchases complete, position Titans at map chokepoints, and deploy special Titans like UTCM if available. The Hell Wave guide covers final-wave deployment.
Cen Milestones Checklist
| Wave | Target Cen (Normal) | Expected Purchases |
|---|---|---|
| 10 | 900 | Cameraman + Speakerman |
| 20 | 2,500 | Saved for Cameraman upgrade |
| 30 | 6,000 | Cameraman upgraded |
| 40 | 10,500 | Speakerman upgraded, TV Man bought |
| 50 | 16,000 | Cineman bought, farming complete |
| 60 | 22,000 | TV Man upgraded |
| 70 | 28,000 | Drill Man bought, Hell Wave prep |
Buy Order vs Special Titans
The buy order covers standard roster Titans only. UTCM, UTSM, and Uptati are quest-unlocked and do not replace buy-order purchases — they supplement your roster after wave 46+. Pursue UTCM assembly via Boss Rush once Cineman is purchased, but never pause the buy order to farm quest parts before wave 46. Special Titans sit above standard units on the tier list and redefine Hell Wave deployment once obtained.
Common Buy Order Mistakes
Buying Titans before the specified wave range wastes Cen on units you cannot upgrade in time. Skipping save windows (16–20) leaves you short for wave 21. Over-farming past wave 50 when already on-track yields diminishing Cen returns. Purchasing weapons instead of Titans during Endless is the most frequent new-player error. Redeem codes for bonus starting Cen to buffer early purchases, and use the calculator component embedded on this page's companion tool page to track your next required purchase in real time during Roblox sessions.