birthday party

I have a whole list of scenarios here for the very few times I do backyard battles. You can tailor them to your backyard:
Airsoft scenarios:

Rules:

Headshots are automatic one-hit kills, no matter what the health system is.

Spring guns are automatic one-hit kills, no matter what the health system is.

Airsoft guns hurt. Any player that is shooting a player who is out will be removed from the game.

FAKE or “safe” knives may be used for safety kills. If the knife touches you, you are dead.

One person on the team (chosen in the beginning) is chosen as demolitions expert for the team and carries all “explosive” devices.

Team leaders will be issued a map with objectives marked and any other necessary intelligence.

Friendly fire does as much damage as enemy fire.

To signify that you are out, raise your hand high and walk out of the play area. Do not fire upon others.

Only the backyard may be used

If there two players fire and hit each other, both are out, regardless of who was killed first.

If there is a dispute in a hit, both players are out to avoid fighting.

There is no physical contact allowed.

Climbing fences, rails, etc. is allowed, but be cautious.

Any gear is allowed in play, but the minimum is a balaclava, ski mask, shemagh, or hood and safety glasses or a paintball mask. Long clothes and gloves are advised, as we are dealing with AEGs and GBBs, not $20 spring guns.

If there is only one object (ex. Center flag, abort codes), it may be stolen after being captured. However, objects that are in each team base MAY NOT be stolen after being captured.

If you are hit by a grenade (thrown or launched), either directly or from a ricochet, you are out in one hit, regardless of the health system.

Ricochets from regular bullets do not kill

Gun hits never count

Try to aim for the torso

You must call a safety kill if you are within ten feet of an enemy. Firing at this range is dangerous.

Through-cover kills count

Dead players can’t communicate, give ammo, etc.

Respawn is 45 seconds and occurs at the team base

Cover can be made out of flipped garbage cans and other items, but may not be carried with the player.

Iron man health: The player is out when they cannot take any more hits. This is where the “any gear allowed” rule falls into play because a player wearing heavy armor can take more hits, but sacrifices mobility while a player with little armor can’t take as many hits, but is much more mobile.

Standard health: One hit kills

1.   Agent: One player is chosen to be the agent. The agent has an iron man health system. He must fight his way out of the yard, starting at the far end. He may pick up and dual-wield weapons from dead enemies. The enemies have standard health and respawn 10 seconds after death.
2.   CQB Hostage rescue: A 2-man fire team must rescue (a) hostage(s) from the given area. The fire team is advised to use stealth when killing enemies and getting into the area where the hostages are, as the terrorist holding the hostage may kill them if the CT team (1) does not reach the area in time or (2) the CT team does not heed warnings after being spotted. The terrorist taking the hostages must give warning before executing the hostages. The CT team must be within 15 feet for the terrorist to warn them. Hostages may not be used as human shields.
   Health: either iron man or standard.
3.   Ground War: 2 teams compete for certain objectives on the map. The first team to complete each objective wins. The objectives are as follows:
   -Secure the docks (hold them for 1 minute)
   -Retrieve the missile abort codes (hidden in one location on the field)
   -Retrieve the access codes (each team has this in their base)
   -Capture the deck (hold for 1 minute)
   -Return to base and hold for 15 seconds
Health: either iron man or standard
4.   Team Death match: Two teams kill each other. No respawns.
Health: standard.
5.   Center Flag: One flag is located in the center of the field. Each team must compete for the flag. First team to return it to base wins.
Health: standard
6.   Capture the Flag: One Flag is located in each base. First team to get the other team’s flag wins.
Health: Standard
7.   Bomb Disposal: One team has the bomb and must plant it at one of two designated areas. The other team wins by defusing the bomb before it detonates. Bomb has a 2-minute timer once set. No respawns.
Health: Iron Man or standard
8.   Downed Bird in enemy wings: A pilot has been shot down and is stuck at the crash site with only a pistol. The CT team must complete the following objectives before the terrorists can CAPTURE (NOT kill) him:
   -Rescue the pilot
   -Destroy the plane wreckage
   -Move to the EZ and wait 15 seconds for extraction
Health: Iron Man
9.   Infiltration: A 2-man team must infiltrate a compound and collect the blueprints. The team must then exit the compound and extract. No respawns. This is most effective if done at night or dusk, as it allows for more stealth movement. The round ends if alarms are raised. The bodies of dead enemies stay in the field where they are killed. The team should hide the bodies of any dead enemies.
Health: standard.
10.   General down: One team must kill the enemy general, who is protected by his team and remains stationary, like his team, using whatever means necessary. The general is armed with only a pistol and kills with only one shot. No respawns. Makes for great long-range kill opportunities. The general may escape the area by reaching the lower dock and surviving for 10 seconds.
Health: Standard for the general, iron man for soldiers unless they are shot by the general.
11.   Amphibious assault: one team deploys in the yard and must fight their way to the extraction point on the dock. They must hold the extraction point for 1 minute upon arrival. If members of the assault team are killed, they must take a 30 second penalty before the respawn countdown begins at the insertion point. The team must extract within 10 minutes after the game begins.
Health: Standard

Also check unconventionalairsoft.com for some cool mercenary scenarios and stuff.