Pack-A-Punch your weapons to unleash devastating firepower! 💥 Fan-favorite perks return to aid your survival. 🥤 Unlock the ultimate secret weapon hidden on the Moon! 🌕 Play solo or team up in 1-4 player co-op. 🤝 Infinite waves of relentless undead! ♾️ Gear up with the Mystery Box and wall-buy weapons. 🎁