Retro Sci-Fi Bullet Heaven
Let Them Come: Onslaught throws you into a relentless alien invasion where survival depends on reflexes, firepower, and the pursuit of the perfect build. Each run challenges you to shred swarms with an arsenal of outrageous weapons — from flamethrowers to orbital strikes — and stack upgrades to create unstoppable synergies. Procedurally generated arenas, escalating threats, and towering bosses ensure no two battles are the same. Backed by a pulse-pounding synth soundtrack, Onslaught blends survivors-like intensity with the grit of a retro sci-fi action movie. Can you hold the line, or will the horde consume you?