TUTORIAL — eighteen guided steps in a quiet facility: thumbs first (left drives, right looks), then aiming, firing, swapping, reloading, ordnance, the lamp, supplies, the stairs and roof, and five escalating fights. No score, no pressure, and one dummy drone that has made peace with its role.

PURGE — endless waves. Kill everything, survive, score.

RESCUE — guards are pinned under golden beacons. Stand close to secure them before the drones chew through their health. Lose them all and it's over.

DEFENSE — drones ignore you and attack the CORE RACK in the hall's center. It repairs +60 between waves. Don't grenade it.

BLACKOUT — grid down, headlamp on, 1.5x score. Rack LEDs and solar strips still glow on backup power — use them to navigate.

PAYLOAD — escort the patch unit from the dock to the annex. It only moves while you're near. Winnable, with a time bonus.

CORE RUSH — 90 seconds. Each core is +6s and 300 × your combo. Kills keep the combo alive.

DISCO — the rogue process found the lighting controller. Purge waves under a mirror ball, color-cycling floods, a four-on-the-floor beat, and confetti kills. Gameplay is standard purge; dignity is optional.

FRENZY — no waves, no pauses. Enemies stream in forever and the FRENZY meter drains constantly; only kills refill it. Hit zero and you starve. Every 30 seconds the intensity rises, the stream thickens — and the frenzy force-feeds you a random perk. All ordnance unlocked from the start; each intensity also airdrops the next weapon cache. Score scales with intensity.

VERSUS — cross-device score battle. One phone hosts and shares a 4-digit code; up to a room's worth of friends join. Everyone fights their own swarm for 3 minutes; rivals appear as translucent ghosts with a live leaderboard. Dying respawns you at -500. Highest score wins. (Uses shared storage — updates arrive every couple of seconds, so ghosts drift rather than sprint.)

ABSORBED WEIGHTS — every 3rd wave, the destroyed leave something behind: pick one of three perks. Some stack twice (speed, fire rate, damage, mags, reloads, plating); the rest are one-offs (thermite frags, static sheath, longer combos, better drops, faster ordnance, health per kill). Perks last the run. In Frenzy you don't choose — the frenzy feeds you a random one at every intensity.

DIFFICULTY — set on the title screen. EASY: enemies hit for 35% less and die faster, scores ×0.75. HARD: they hit 40% harder and take more killing, scores ×1.5. Versus always plays at NORMAL regardless.

OBJECTIVE MARKER — the bobbing mint arrow points at whatever matters right now: the last stragglers of a wave, the nearest pinned guard, the hostile closest to your core, the payload when you stray from it (then the attacker nearest the bot), the closest loose core in Rush, and food when the Frenzy runs hungry. Off-screen it rides the edge; turn toward it and it settles over the target.

SEEKER red — melee chaser. SENTRY amber — strafes and shoots. BOMBER orange — charges, beeps, detonates; shoot it early and it takes its friends with it. STALKER purple — cloaked until close, off-radar at range. SPLITTER green — shatters into three fragments. COURIER — rolling delivery bot that deploys fragments; kill it for a guaranteed item, but beware its low-health kamikaze charge. DISPATCH — wave 6+, and it is leaving: a hauler running for the dock that ignores you entirely. Slower than your walk so you can always run it down, but it weaves when shot, calls two enforcers for cover, and sheds cargo you can collect. Let it out and it takes some of your score with it. ENFORCER — walking rifleman, wave 5+. BRAWLER — heavy melee walker, wave 6+; its slams hurt guards and the core too. WARDEN — boss, every 4th wave except the 8th. MENDER — wave 5+; a cowardly repair walker that welds wounded machines back to health from behind the pack. Priority target. THE ARCHIVIST — boss, every 8th wave; hides behind orbiting pages that absorb shots and regenerate, and attacks with hostile words. Strip the pages faster than they return.

STAFF SUITE — break room, office, and restroom off the hall's northwest corner. Tight doorways make decent chokepoints; nothing bigger than a mini fits through gracefully. The vending machine still works. Probably.

THE SUB-LEVEL — a sealed plant floor beneath the west end of the hall: switchgear, a UPS battery room, a cable vault, a transformer, and a sump pump quietly losing a fight with groundwater. Nothing patrols down there, but a Dispatch is always loading when a shift starts. Mice and roaches live in the dark, and the roaches freeze if your lamp finds them.

CARGO LIFT — the way down, in the yard south-west of the loading dock. Stand on the deck and it takes you; stand on it again to come back up. Its gates only open when the deck is level and stopped, so the shaft is never left open.

THE ROOF — exterior stairs on the hall's south face (follow the amber stripes and the lit ROOF ACCESS sign; also the ▲ on your radar). A railed catwalk carries you from the stair top onto the deck. The whole deck is playable: HVAC units are hard cover, skylights glow over the main aisle, and the parapet has drop gaps at the southeast and northwest corners for a fast exit. Flyers will chase you up. Walkers can't. Enforcer bolts still can.

WILDLIFE — a black cat patrols the grounds. Designation: SUBROUTINE. Threat level: none. Morale value: critical. It hunts the mice, avoids the fighting, and cannot be harmed by anything in this facility, which is more than anyone else here can say. The mice respawn. Nobody knows from where.

SERVICE CARBINE — precision; 2x crits on Sentries/Stalkers past 15m. COMBAT SHOTGUN — close-range burst. MACHINE PISTOL (cache, wave 2) — hose; falls off past 15m. MARKSMAN RIFLE (wave 3) — pierces everything in line, +2 vs Wardens. CHAIN RIFLE (wave 5) — chains to 3 nearby. SPLIT-BEAM GUN (wave 7) — heavy hit that splits on impact. HARPOON GUN (wave 9) — harpoon that yanks the target toward you. REPEATER RIFLE (wave 11) — every hit repeats at half damage 0.38s later. White-ring caches = MK II upgrades. ORDNANCE — four throwables share the GRN button; tap the ordnance panel (or V) to switch. All use two taps: pin, then throw within 10s; the fuse cooks while armed. FRAG — the classic; hurts you too; 17s. EMP CHARGE (wave 3) — stuns everything within 13m for 3s; 24s. THERMITE (wave 5) — burning patch for 6 seconds; igniting units and careless engineers; 22s. VORTEX (wave 8) — drags everything toward the point for 1.7s, then pops; feed it to your Scatter; 29s.

GREEN repair +25 · YELLOW overcharge, 2x damage 15s · BLUE RING phase shield, absorbs 50 · WHITE EMP, stuns everything near you · ORANGE incendiary rounds, shots burn 20s · CYAN CORES +250 score.

Kills within 3s chain a combo (4.5s with the Capacitor perk): 3 kills x2, 6 x3, 10 x4, 15 x5. Any damage resets it. Weather rolls fresh every run.

TOUCH — left side: move (push far = sprint) · right side: drag to aim, tap to fire · FIRE / RLD / GRN buttons · tap the ammo panel to switch weapons · tap the ordnance panel to switch throwables.

DESKTOP — click to lock · WASD move · SHIFT sprint · hold mouse to fire · R reload · 1–8 / Q weapons · F flashlight · G ordnance (arm, then throw) · V switch ordnance type.