Hold the Reliquary Vault. Kite the pit. Do not let the windows fall.
Wall buys: Kar98k $500 · Trench Gun $1200 · MP40 $1000. Mystery Box $950. Pack-a-Punch $5000 (camo + explosive). Catwalk stairs $1000.
Fire Bow: tap for piercing molten arrows. Hold LMB then release for a charged shot (2 ammo) that opens a magma geyser — it pulls and incinerates.
Train in the sunken altar pit. Rebuild windows. Spend points. Survive the gait shift from walkers to sprinters.