Stealth is paramount in Unity. Utilize cover (X/A) to hide from enemies and perform cover assassinations. Blend into crowds (O/B) to avoid detection. For combat, use Square/X to attack, Circle/B to dodge, and Triangle/Y to parry. Parrying is essential for breaking enemy defenses and opening them up for counter-attacks. Remember, fighting large groups head-on is often a death sentence; prioritize stealth and pick off enemies one by one. Smoke Bombs are invaluable for disengaging or creating opportunities for assassinations.
