Plain physics make the game feel wonky and strange. i think arrows sometimes hit spots you did not aim at.
Clicking to fire arrows is the main control, aim just a tad above the enemy head to hit them.
The control is clicking to fire arrows. The objective is to shoot down foes before they reach your castle.
Most important tip is to aim above the target head. Use a slow careful aim to beat rushing your shots.
Q: What are the controls? A: Clicking to fire arrows is the main control.
Q: What is the objective? A: Shoot down foes before they reach your castle.
Q: What features are stated? A: Arrow skins and castle upgrades are stated.
Q: What is the main mechanic? A: Clicking to fire arrows is the main mechanic.