You're the police. Armed robbers have stormed the bank. Aim with the mouse / your finger and click / tap to fire.
Hold COVER (button / Space) to duck incoming fire — but you can't shoot while fully hidden, so peek to shoot. Reload your 6-round mag with R or the RELOAD button.
Stop the masked robbers. Do NOT shoot hostages or civilians — escort them to the exit for a bonus!
Desktop: mouse aim + click, R reload, Space cover. Mobile: tap to shoot + on-screen buttons.