Why holding fire for two seconds wins the round

In wave-based games, ammo and position matter more than rate of fire. Holding a shot is a decision, not hesitation.

In wave-based games, ammo and position matter more than rate of fire. The player who never stops shooting usually empties the magazine on the first enemy and meets the next crowd with nothing left.

Holding a shot is a decision, not hesitation. The first shot should leave once the target has entered the range where you no longer have to adjust your aim, because every missed shot costs two resources at once: the bullet and the time.

A useful drill: play one whole wave without firing, only moving and counting. You will find that most waves can be survived by repositioning alone. After that, add shots only at the points where they are genuinely required.

Reload before the magazine is empty, not after. A reload started in the middle of a crowd almost always costs a life, while one started on an empty screen costs nothing.

If the game gives you grenades, save them for the wave with the big unit, not for a small crowd. A grenade spent on wave two is usually unavailable on wave five, and wave five is the one that decides the run.