Sniper

Tactics

 * Don't forget to use, as the amount of bonus damage you get from the guaranteed critical strikes can save your life.
 * As long as there's a lot of running space, Sniper can handle crowds just as well as (if not better than) other characters. Simply run away from the crowd to create distance and hit them with a charged as much as possible before enemies close in. A great tactic for this is to turn around sharply when you're ready to fire, and then perform a backflip with  for added distance before you start charging.
 * With Rusty Jetpack, Photon Jetpack, and Soldier's Syringe, a experienced player can not only perform a "skip" when landing from a elevated position using but also hold oneself in the air while charging a fairly powerful  effectively singling out a towering boss with a higher hitbox, or safely dipping into a mob for a quick hit and run attack.
 * Sniper has high base damage (15 instead of 12, 4 growth instead of 3), making offensive drones and certain items more powerful than they would be for other characters.

Snipe

 * With practice, you can, then jump and perfect reload just in time to again when you land. With attack speed increases, you can fire in the air without needing to land.

Reload:
 * When reloading the gun, you want to stop the bar in the white area for a "perfect" reload. The white area is close to where the bar starts off, so if you practice your reloads you can eventually get to where you make a perfect reload almost immediately after every shot. It's a skill worth learning.
 * Attack speed bonuses increases the speed of the bar, which can take some time getting used to.
 * You can't move while reloading. However, you don't lose your momentum, so reload while jumping to keep moving.

Steady Aim

 * Activating stops your horizontal momentum.
 * Prioritize over .  Only use  while kiting enemies in-between s.
 * will pierce through the enemies but doing so will halve the damage for every enemy it hits.
 * Perfect reloads affect this ability as well, granting a great damage bonus for a fully charged, perfect reloaded.
 * If you crit an enemy with, all piercing damage after that will be crits as well. This synergizes with , allowing you to critically hit all enemies.
 * Attack speed decreases the time required charging for a fully charged shot.
 * Hold the button for while waiting for it to cool down, and it will start charging as soon as possible. This is useful when shooting off Snipes during  cooldown.

Military Training

 * Distance increases with movement speed.

Spotter: SCAN

 * You can activate this while charging (and climbing ropes/ladders).

Items

 * The best use item for the Sniper is anything that can attack enemies without requiring aim, such as Jar of Souls, Glowing Meteorite, Nematocyst Nozzle, or even the Disposable Missile Launcher (but NOT the Sawmerang). This is because Sniper's only true fault is an inability to fight effectively against large crowds in tight spaces, so having an item that can kill from a safe location the sniper can't shoot from is practically a necessity.
 * Due to the Sniper's high damage and low attack speed, on-kill items such as Gasoline and Will-o'-the-wisp are more effective than chance-on-hit items such as Rusty Knife and Ukulele.
 * Heaven Cracker is an item that helps immensely with crowd-control for the Sniper, since their basic attack,, does 250% damage. If you time the count on Heaven Cracker, you can get it to activate on the Sniper's  ability and handle large crowds in literally one shot.
 * The Old Box works especially well with the Sniper since it tends to put a decent amount of distance between enemies and the Sniper when large crowds of enemies start to swarm them.
 * The Crowbar dramatically improves the effectiveness of against undamaged enemies, and is among the best items for the Sniper.
 * Items that reduce the Cooldown of abilities are especially useful to the Sniper, for their and  abilities.  Alien Head is an item that works very well simply because of the reduction of their Cooldown.  The Wicked Ring's effect when paired with  helps to drastically reduce Cooldown since Cooldown is reduced by one for every critical hit, and  gives a 100% chance to hit a critical.

History
Sniper