Survivalist

You start with three survivors and one road. Every gate is worth more the longer
your squad shoots it — hold fire on a +1 and watch it climb to +20. But
gates come in pairs with a lethal pillar between them, so you have to pick a
side: the ×3, or the +18, and never the ÷5. Break green crates to hit
harder and blue ones to shoot faster, dodge everything solid, and kill what is
coming down the lane. Every stage ends with a boss. Die, and it comes back
weaker.