Rainbow Six Siege Strategy Guide · Cosmo Strategy Guides

01 · Pre-Round (Setup & Drone Phase)

The first 45 seconds decide whether the round is winnable.

Drone phase is for intel, not theatre Find defenders, identify operators, mark gadgets. Save your drone for in-round use: don’t burn it sightseeing.
Defenders: reinforce in the first 15 seconds Critical walls go up immediately. Every second a defender spends thinking about which wall to reinforce is a second a roamer is not setting up.
Defenders: place utility before reinforcing Barbed wire, deployable shields, and trap gadgets need placement before the round starts. A rushed reinforce is fine; a rushed trap is wasted.
Save at least one drone per attacker A drone left in a vent or under furniture is a free camera for the entire round. Burn one in drone phase, save one for pushes.
Designate the team’s drone op One attacker dedicated to drone control during pushes. Without a designated drone op, the team enters site blind.
Verify hard-breach denial pre-round Defenders: if the attacker comp has Thermite or Hibana, you need Bandit, Mute, or Kaid. Communicate operator picks before spawn.
Use known drone holes Most maps have small openings drone operators can squeeze through. Memorize the holes: they preserve your drones for round.
Don’t waste drone phase watching enemies A drone op who watches an enemy through prep is a drone op not gathering map intel. Look, mark, move on.

02 · Operator Roles

Six functional roles, each with operators that deliver the role differently.

Hard Breach Reinforced wall openers

Thermite
Hibana
Ace
Maverick

Bring: Patience to drone before breaching, and trust in your support to cover.
Take: Access to the site through angles defenders cannot re-reinforce.

Without a hard breach in the lineup, you are limited to hatches and soft walls. Always bring at least one to ranked.

Soft Breach / Vertical Unreinforced wall and floor openers

Sledge
Buck
Zofia
Amaru

Bring: Vertical map awareness and a willingness to take unconventional angles.
Take: New lines of sight defenders cannot anticipate.

Vertical play wins rounds when defenders set up for ground-level pushes. Underused outside high-level play.

Intel Information gathering

Iana
IQ
Brava
Twitch
Lion

Bring: Drone discipline and squad-callout habits.
Take: Intel that tells the team where to push and where to wait.

Intel ops scale with the squad. Solo-q intel ops underperform; coordinated squads turn intel into round wins.

Anchor Defender site holders

Doc
Rook
Smoke
Solis
Aruni

Bring: Discipline to hold a single angle for full rounds.
Take: A site that does not collapse when one teammate dies.

Two anchors per defense is the standard. More than two and you give up too much pressure.

Roamer Defender outside-site disruption

Vigil
Caveira
Mozzie
Pulse
Goyo

Bring: Sound discipline and deep map knowledge.
Take: Time and utility from the attacker push.

A good roamer trades for two attackers and a drone. A bad roamer feeds. Solo-q roaming is a coin flip.

Support Utility focus, both sides

Thatcher (attacker)
Jäger (defender)
Mute (defender)
Bandit (defender)

Bring: Coordination with the breacher and the entry fragger.
Take: Utility advantage that compounds across the round.

Support ops are matchup-dependent. The right pick changes per map and per opposing comp.

03 · Weapons by Class

Eight primary and secondary classes covering everything from sidearms to ballistic shields.

Class	Effective Range	Best For
Pistol	0–15m	Backup sidearm and the secondary slot. Some hand cannons (Deagle-class) are viable primaries in close range.
Machine Pistol	0–15m	Anti-utility ranged spam (Bearing 9, P10 Roni). Often paired with a shield or specialty primary.
Shotgun	0–8m	Hatch destruction, vertical play, and point-blank fights. Carried as primary or secondary by many operators.
SMG	0–25m	Defender CQB primary. Fast hipfire, mobile reload, predictable recoil.
Assault Rifle	10–50m	Attacker default mid-range. Controlled-burst fire and headshot priority.
LMG	15–50m	Suppression and sustained fire. High mag, slow ADS, rewards patient angle holding.
Marksman Rifle	30–80m	Long-angle hold and one-shot headshot potential. Strong on the larger maps.
Ballistic Shield	0–5m	Specialty role and area denial. Rewarded heavily in coordinated squads, punished in solo-q.

04 · Gadget Reference

Universal gadgets shape every round more than weapons do.

Frag Grenade Attacker anti-utility and angle-clear tool. One frag in the right corner is worth two operators of clearing.
Smoke Grenade Plant denial and sight-line blocker. Standard tool for the post-plant defense.
Stun / Flash Grenade Entry tool for soft pushes. Great paired with a hard breach: flash, breach, push.
Claymore Attacker flank cover. Place on common defender rotation paths to convert a roamer kill into free intel.
Breach Charge Soft-wall opener and behind-cover killer. The single most underused gadget in low ranks.
Nitro Cell Defender remote explosive. The lethal answer to an attacker mid-plant or mid-push. One-shot kills.
Deployable Shield Defender hard cover for plant denial or for creating new cover positions mid-round.
Bulletproof Camera Extra defender observation point. A camera in the right spot is worth a sixth teammate on intel rounds.

05 · Map Knowledge & Callouts

Memorize the maps. Siege punishes lack of map knowledge harder than any other shooter.

Ranked map pool is smaller than the full rotation Learn the ranked pool first. The casual rotation is broader but ranked is where map knowledge matters.
Memorize site layouts before queueing ranked Each bomb site has standard reinforce patterns, common roamer spots, and known plant locations. Study before playing.
Standardize callouts within your squad Pro callouts vary by region; pick one and stick to it. A confused team mis-rotates more than it loses gunfights.
Hatches and skylights enable vertical play Most sites can be opened from above. Defenders that don’t reinforce hatches lose to vertical pushes.
Spawn-peeks exist on most maps Defenders peeking the attacker spawn is a real risk. Drone the angles or sprint to cover: don’t walk in the open.
Reinforcement priorities differ per site per map There is no universal reinforce template. Each site has 2-3 priority walls; the rest is noise.
Plant locations decide post-plant fights Not all plant corners are equal. Choose plants that maximize defender utility cost to defuse.

06 · Drone Discipline

Information wins rounds. The drone is your information.

One attacker dedicated to drone control per round Without a designated drone op, intel is fragmented and pushes happen blind. Assign the role pre-round.
Save at least one drone per attacker for round A drone consumed in prep is a drone you cannot use to scout the push. Always carry one to round.
Use small openings to preserve drones Most maps have drone holes: small openings between rooms. Use them so defenders can’t kill the drone.
Drones killed early waste team utility A drone destroyed by Mute or Mozzie before round is a permanent intel loss. Position drones in places they can’t see.
Mark intel as you find it Don’t hoard information. Call out operators, gadgets, and reinforces as the drone sees them.
Drones placed in vents or under furniture become persistent cameras A drone parked safely is a free camera for the whole round. Park it before pushing.
Don’t watch through a drone for an entire round Paralysis by analysis loses rounds. Get intel, leave, push.

07 · Breaching & Entry

A breach is a multi-step play. Skipping a step gets the breacher killed.

Verify your hard breach pre-round If the attacker comp has no Thermite, Hibana, Ace, or Maverick, you cannot open reinforced walls. Pick before spawn, not during.
Soft breach for unreinforced walls and hatches Sledge and Buck open the floors and unreinforced walls that hard breaches cannot reach efficiently.
Pair breaching with utility A breach without smokes, flashes, or drone support is a confirmed kill on the breacher. Stack utility before the charge goes off.
Vertical play creates new angles Breaching the floor or ceiling above a site puts you in a position defenders rarely set up against.
Don’t entry without intel Drone first, breach second, push third. Skipping the drone phase is the most common low-rank mistake.
Time the breach with the team push A solo entry behind a breach is a 1v3 where the attacker loses. Push together or don’t push.
Ace and Brava breach at angles others can’t Ace places charges at unusual heights; Brava can repurpose defender utility. Both create breaches that defenders set up against.

08 · Defender Setup

A site that holds itself is a site defenders set up correctly.

Reinforce the most-breached walls first Each site has 2-3 walls that get breached every round. Reinforce them before anything else.
Anchors hold site, roamers harass outside Two anchors plus two roamers is the standard split. The third anchor is situational and matchup-dependent.
Stack utility around plant denial zones The bomb plant area should be the most utility-rich part of the site. Smokes, nitros, and deployable shields all live here.
Cameras cover all major attacker entry routes Bulletproof cameras and standard cams should overlap so no entry route goes unwatched.
Deny attacker drones early Mute jammers, Solis SPEC-IO, and Mozzie pests reduce attacker drone uptime. Place them early and re-place mid-round.
Limit reinforcements to walls that matter Each defender has limited reinforcements. Wasting them on cosmetic walls is the most common low-rank error.
Practice setups with the same trio A site setup that works once is a coincidence. A setup that works ten times is a strategy. Run the same trio across multiple matches.

09 · Trade Discipline & Combat

In Siege, micro-engagements decide rounds. Trade well, win matches.

Peeker’s advantage is real Moving peeks beat static holds in head-to-head fights. The peeker sees their target before the holder reacts.
Lean for narrow angles Q and E (or your platform equivalents) let you peek without exposing the body. Use lean for tight angles: don’t peek shoulder-flat.
Never push without trade potential nearby A solo push that gets you killed is a 4v5 round. Always have a teammate within trade range.
Crouch-jump in tight rooms A crouch-jump changes hitbox shape mid-fight. Effective in close quarters; predictable past 10m.
Recoil patterns matter more in Siege than in any other shooter Each weapon has a learnable spray pattern. Memorize them in custom games before grinding ranked.
Pre-aim head height AR and SMG damage at head height ends fights instantly. Walking with your crosshair on the ground is a predictable death.
Drop-shooting is mostly punishable Going prone mid-fight has narrow upside. Lean and movement beat drop-shots above bronze rank.

10 · Audio & Settings

Siege X overhauled audio. Trust it, and tune your settings to match.

Headphones, never speakers Siege audio is engineered for stereo headphones. Speakers cost you positional intel that headphones deliver for free.
Master volume below 50 percent Siege peaks loudly during fights. Lower master volume gives your ears more dynamic range to pick up footsteps and reloads.
Field of view at maximum Default is 60; max is 90. Always max FOV. Smaller targets is the trade-off, and it’s worth it.
Lean keybinds you can use mid-fight Default Q/E is fine on PC. On controller, lean is harder: practice it explicitly. Players who can’t lean lose head-to-heads.
Disable motion blur and chromatic aberration Both effects hide enemies and slow reaction times. Off in the video settings menu before the first ranked match.
Audio overhaul changes propagation After Siege X, reverb and propagation are significantly more accurate. A sound from above sounds different from a sound from below: trust the new audio.
Verify settings every season Patches sometimes reset video, audio, or keybind preferences. Confirm settings before queuing your first ranked match each season.

11 · Pro Tips

Compound habits.

One operator deep beats five operators shallow Mastering one attacker and one defender beats playing twelve at the level of a tutorial. Specialize first.
Solo queue caps most players at platinum or emerald Past a certain rank, solo queue does not produce coordinated rounds. A regular squad is non-negotiable for diamond and above.
Don’t peek without intel A peek without drone or callout intel is gambling. The team that peeks blind loses to the team that peeks informed.
The team that doesn’t waste utility usually wins Frags, smokes, breaches, and drones are limited. A round won on utility is a round you didn’t need to fight cleanly.
Watch pro VODs High-level Siege is teaching at every moment. Two hours of VOD per week compounds into a measurable rank gain over a season.
Take the round loss, win the round info A lost round that revealed three roamer spots is sometimes worth the loss. Information accumulates across a match.
Rage equals bad decisions equals more rage Tilt is the silent rank-killer. Take the break before the next match if a round went wrong; the queue will still be there in five minutes.