LastCamp : Defense Rosita Evade Stall Guide for Stage 300

To clear Stage 300 in LastCamp : Defense, deploy Rosita as a solo vanguard tank to completely negate incoming melee damage through evasion chains while your backline truck units eliminate the stalled horde. Standard health-pool tanks collapse within two to three hits from Stage 300 mutated runners and boss-tier infected. Rosita takes zero damage on successful evasion checks, allowing her to anchor the frontline indefinitely against pure melee waves.

Vanguard Positioning Rules

Rosita must stand alone at the absolute front of your perimeter to prevent enemy cleave attacks from wiping out your supporting squad.

Deploy Rosita as the Solo Anchor: Place Rosita at the outermost edge of the defense line so enemy hitboxes lock onto her before reaching your barricade.
Isolate Secondary Defenders: Keep all other melee fighters away from Rosita's side. Large mutants possess wide-arc swings that bypass evasion checks to damage adjacent targets.
Set Crowd Control Behind the Barricade: Place stun or slow specialists directly behind the barricade line to disrupt charging mini-bosses before they reach full swing speed.
Mount Ranged Fire on the Truck: Fill elevated truck slots with explosive splash gunners and single-target marksmen to fire over the frontline into the clumped swarm.

Roster Synergy and Stall Composition

An evasion stall only succeeds if your camp outputs enough damage to eliminate the wave before stage timers expire or secondary threats overwhelm the lane. Organize your squad roles around sustained boss damage and wide-area wave clear:

Role	Unit or Weapon Focus	Priority Objective During the Stall
Vanguard Anchor	Rosita (Evasion Priority)	Lock melee aggro and absorb attack rolls at zero damage.
Burst Finisher	High-Caliber Sniper / Single-Target DPS	Burn down high-health mutant bosses focused on Rosita.
Wave Clear	Grenade Launcher / Heavy Artillery	Wipe dense runner swarms grouped tightly around the vanguard.
Utility Support	Cryo / Electric Crowd Control	Slow incoming attack speed to smooth out evasion RNG.

Managing Evasion RNG and Hazards

Because evasion rolls occur per attack, dense waves create high statistical survival but increase the risk of an unlucky hit. Use manual abilities to protect the stall:

Stagger Incoming Attack Rolls: Trigger area stuns or knockbacks when dense mutant packs arrive simultaneously. Lowering the number of simultaneous enemy strikes reduces the chance of a fatal evasion failure.
Target Projectile Enemies Immediately: Evasion does not protect against ground-targeted acid pools or ranged projectiles. When an elite acid spitter stops at the screen edge, direct manual burst skills to eliminate it before it fires.
Hold Shields for Recovery: Do not activate barrier buffs or healing items while Rosita is actively dodging. Reserve defensive active skills strictly for recovery after she absorbs an unevaded strike.
Reset Spacing if Displaced: If knockback mechanics push Rosita toward the truck, use targeted slow skills to hold the enemy line and prevent them from reaching base structures.