The Survival Aliens — Wave Strategy, Resource Priorities & Night-7 Setup | Peekade

Resource priority: ammo > walls > turrets

The natural mistake is to over-build defenses early. Walls and turrets are visible upgrades; ammo is invisible. But ammo is what kills aliens — walls just slow them down. The early-game priority order should be: enough ammo to clear two waves, then walls for the chokepoint, then your first turret.

Concrete benchmark: by the end of night 2, you want at least 3 magazines on hand. If you're under that, you're spending too much on visible upgrades.

The chokepoint principle

Every map has a natural chokepoint — usually a doorway or corridor where alien spawns funnel through. Build all your walls to reinforce that chokepoint, not to defend the perimeter. A 4-wide chokepoint with 4 walls beats 16 walls scattered around the perimeter, every time.

Place your turrets to fire *into* the chokepoint, not at the entrance. You want aliens to be in the chokepoint when shots land, not just walking up to it.

Upgrade math for the mid-game

Nights 4–6 are where most runs end. The cause is usually a single upgrade priority error: players upgrade their *gun* when they should upgrade their *reload speed*. Reload speed scales with wave size; gun damage doesn't, because most aliens have low HP.

The optimal order through night 6: reload speed → walls → turret damage → gun damage. Skip movement speed entirely until night 7+; you don't need it.

Night 7 entry checklist

Night 7 is the difficulty wall. Coming in unprepared means a 90% wipe rate. Coming in prepared means a comfortable clear.

Minimum loadout: 6+ magazines, max-tier reload speed, 8 walls in the chokepoint, 2 turrets firing into it. If you're missing any of these by the end of night 6, repeat night 6 — the game lets you, and the slow-play tax is worth not dying.