-Don't fire too soon, if they are still coming towards you, wait until you have the best chance of hitting them.
-Be sure all your body parts are behind your cover when engaging the enemy
-Attack in groups, having some people flank the enemy to get an angle on them
-Be sure to communicate to the rest of your team, tell them where the enemy is, when to give cover fire, etc
-If you're low on ammo, turn your gun upside down and fire. Most inexperienced players will not know that you're shotting only air.
-After engaging the enemy, if you find yourself to just be trading shots, don't be afraid to move. Shoot at them first to get them behind cover. Then try to run sideways to cover. It's harder to hit a person running sideways than it is if they run straight forwards or backwards. Also, you'll be more likely ot get an angle on your enemy.
-Always flank people to their left. It will leave them with their gun on the other side of the tree and leave them exposed and vunerable. This will work on all people who are right handed unless they can shoot with both hands.
COLD WEATHER is leading players to switch from CO2 to HPA. Before you
buy your HPA system, check that it is the right system for your
marker. Every marker has a factory recommended input pressure. High
Pressure Air systems do not all have the same output pressures. You
also will need to decide whether to buy a fixed-output or an
adjustable-output system. Fixed systems that put out higher pressured
air than your marker is designed to handle may cause functional
problems; the same is to be said for those that put out too little
air. Adjustable tanks offer ease of tank to marker adaptation, but at
a slight increase in price.
SMOKE "GRENADES" Are used primarily by scenario players, but virtually
everyone has seen them go off in one game or another. Though
expensive, they can provide a smoke haze in front of you that conceals
your movements as you vanish from behind a bunker and flit to another
part of the field. They can also be thrown in front of your opponents'
positions to create a smoke screen they cannot see anything out of,
thus restricting their entire field of forward vision. Beware though:
as the season turns into fall, dead leaves pile up on forest floors
and in open fields. Dead leaves, dry grass, and the other assorted
remnants on the ground are highly flammable and in great abundance
this time of year. Use caution, or save smoke "grenades" for use during
less fire-risky seasons.