Spy match-ups

Class			Strategy
Spy	vs	Scout	A typical Scout rarely stands still and is difficult to hit with any of your weapons. With his speed, he can simply bump into you to Spy-check and easily chase you down. The Force-A-Nature’s knockback, Mad Milk, and the Boston Basher’s bleed effect can aid in revealing you further, so it may be best to avoid him whenever possible. If you end up directly fighting a Scout, backpedal erratically while firing your Revolver at his chest; you don’t want to fight him at close range.
Spy	vs	Soldier	A Soldier who is in the thick of battle is unlikely to notice you until you backstab him. As long as he isn’t rocket jumping, his slow speed makes him a relatively easy target. However, should your backstab fail or he discover you, flee immediately; at close range, his Rocket Launcher can deal heavy damage over a wide area. At medium to long range, you can easily dodge his rockets while retaliating with your accurate Revolver. If he rocket jumps toward you, it’s best to simply retreat and let your more bulky teammates cover for you.
Spy	vs	Pyro	The Pyro is your nightmare. He can use his Flamethrower to easily Spy-check all of his teammates, nullifying your Cloak and disguise. Additionally, he can use his compression blast to keep you pinned in a corner once discovered, so avoid him whenever possible. If you are set on fire, uncloak immediately and run for the nearest body of water or source of Health. If you must directly fight a Pyro, backpedal while firing your Revolver. Even in the midst of combat, his Flamethrower’s large spread may inadvertently reveal you, making him a suboptimal choice to try to backstab. Careful use of the Dead Ringer can let you extinguish his flames once, giving you some immunity to his routine Spy-checks.
Spy	vs	Demoman	A Demoman will often be too focused on combat or laying Sticky traps to pay attention to you. He moves relatively slowly, allowing you to easily catch up for a backstab. Your Cloak and disguise can be used to pass over his Sticky traps with some degree of safety. In a one-on-one encounter, the Demoman holds the advantage at almost all ranges, so it is best to simply retreat. However, if you can stay within medium range but outside melee range, the Demoman will have difficulty aiming and will still be unable to use his melee weapons.
Spy	vs	Heavy	A Heavy is a large, slow target who provides a lot of firepower for his team. He will often be too focused on combat at the frontlines to pay attention to you and thus is your natural prey. Killing him should take much of the pressure off from you as you retreat back to your team. However, if your backstab fails and you are discovered, retreat immediately; his Minigun’s wide spread will easily track your Cloak if the sheer damage doesn’t kill you first.
Spy	vs	Engineer	You act as a direct counter to the Engineer. While the two of you are about even in a one-on-one encounter, the Engineer will typically be near his Sentry Gun, which can easily mow down whatever it targets. However, your Cloak and disguise won’t draw the attention of his Sentry Gun, allowing you to approach and disable his buildings with your Electro Sappers. If there are no other enemies in the area, you can place Electro Sappers faster than he can remove them, forcing him to abandon his buildings and attack you. If you constantly dodge his fire, his buildings will eventually fall. However, there will typically be other foes guarding the area around the Sentry Gun, forcing you to use some tact. If the Engineer is working on his buildings, employ the “Stab then sap” strategy: backstab him, quickly sap his Sentry Gun before it can attack you, then flee. Although this is a very effective technique, it’s best to attempt this while the Sentry Gun is facing away from you or in the midst of upgrading; otherwise, you might take significant damage following the backstab. If you are having difficulty approaching a Sentry Gun, Your Eternal Reward will allow you to maintain a disguise immediately following a backstab, which may make it easier to enter sapping range. If there are too many enemies guarding the area, it’s best to coordinate with your teammates; you can simply disable all nearby buildings and continue on your business while your allies destroy them. If you are feeling particularly devious, you can try to travel through the Engineer’s Teleporter Exit to telefrag him and easily access the rest of his buildings.
Spy	vs	Medic	A Medic’s ability to heal his teammates makes him one of your most important targets. He will often be looking behind his allies to check for threats when healing, so you may have to rely on appearing unsuspecting as you approach. Do your best to act like a member of the enemy team as you prepare to backstab the Medic. To avoid retaliation, it is best to backstab him, then his patient. If your backstab fails, it is best to retreat, as even the Medic outshines you in close range combat. If you are particularly devious and the Medic is particularly unaware, you can disguise as a viable Medic buddy and trick him into following you into a trap or wasting an ÜberCharge on you.
Spy	vs	Sniper	A Sniper will typically be focused on aiming at targets that are far away and will not notice that you’re behind him. Even if he is wearing the Razorback, you should be able to gun him down before he can properly react. However, should the Sniper discover you, he can use Jarate or the bleed effect from the Tribalman's Shiv to nullify your Cloak and disguise, leaving you vulnerable to all nearby enemies. Even with his weak close range weapons, a Sniper is capable of defeating you in a one-on-one encounter, especially if he inflicts one of his debuffs on you. If your backstab fails, keep a modest distance while firing your Revolver or simply retreat and try again later.
Spy	vs	Spy	Although it is rare for you to backstab another Spy, you can Spy-check by approaching the backs of teammates with the Knife equipped; if you automatically raise it as if to backstab someone, that "teammate" is a Spy. If you’re in enemy territory, you may have the opportunity to see if an enemy Spy changes his disguise; if you are not in a position to attack him, simply report this information to your team and continue about your usual business. If you end up directly fighting an enemy Spy, dodge his attacks while retaliating with the Revolver.

See also

• Team strategy