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Onan's Streak is Challege #29. You start off as Judas with Book Of Belial and Chocolate Milk. Missing any shots causes you to take damage. Treasure rooms are present in this challenge. Your goal is to defeat Isaac.

Difficulty

Not hitting anything with your tears makes you take damage. This makes accuracy very important, because missing a few shots can deplete your health very quickly. Because of that, fast moving enemies or enemies with erratic movement patterns can prove to be very difficult in this challenge.

Strategy

  • Hitting any type of poop, fire, bomb, or Stone Grimace (stone heads) does not count as a miss.
  • If you fire a tear and leave the room before it touches the wall or floor, Judas will not take any damage. This is only really useful if you shoot accidentally.
  • Isaac's Heart completely nullifies any damage caused by missing, lowering the difficulty tremendously and turning this challenge into a standard Judas run.
  • Holy Mantle nullifies 1 hit of damage per room allowing more room for errors.
  • Taking Technology 2 and never releasing the fire keys, even across floors, allows Judas to engage enemies without firing any tears.
  • Taking any item that multiples the number of tears (e.g. Mutant Spider) is not recommended, as Judas has to hit with every tear to not take damage.
  • Similarly, taking The Parasite or Cricket's Body is not recommended as the split tears also have to hit enemies for the player to not take damage.
  • Taking Rubber Cement is recommended, as hitting a wall won't deal damage to you, and hitting the ground won't either if an enemy is hit first.
    • Enemies include: Stone grimaces, unkillable enemies, fireplaces and bombs.
    • CAUTION: Hitting a poop is NOT considered as hitting an enemy, therefore if you only hit a poop when the tear fall to the ground, you'll take damage.
  • Hitting a target while having Cursed Eye still causes you to take damage and teleport out of the room.
    • Charging you shots before entering a room can kill you, since it will fire a big tear followed by 3 little tears, causing damage.
  • Proptosis allows Judas' shots to miss without dealing damage as long as they don't hit a wall or object.
  • Dead Eye is very useful in this challenge, as the player will be focusing on not missing. This can allow for long streaks at high damage.
  • Tractor Beam keeps your tears in a straight line in front of you, which is very helpful for hitting many later enemies.
  • Kamikaze! seems to not deal damage to you, so this challenge can be played like Blue Bomber.
    • This is a bug, it might get patched.
  • Ipecac could be a nice item to have, just think about not damaging yourself.
  • Spectral tears effect might help, since going through a rock doesn't count as missing.
    • Pupula Duplex is really helpful, since it give Isaac's Tears a bigger hitbox, in addition to spectral tears.
    • Continuum will help you, giving you spectral tears and going through the walls to get back on the other,
  • Piercing shots could be useful, since the shots won't damage you if you hit at least one enemy, and you can hit several with one shot.
  • Lost Contact should be avoid, because it cancels your big tear.
    • Blocking a tear count as hitting an enemy.
    • However, when paired with piercing shots, it becomes useful.
  • Oddly enough, Brimstone won't make you suffer of missing enemies, making the challenge a simple Judas brimstone run.
  • Mom's Wig will keep spawning friendly spiders until there's 5 of them when charging the shot.
    • The same goes for the guppy transformation or The Mulligan
      • Be careful however, because if your friendly spiders/flies kill the enemy before your tear hits it, you'll take damage.
    • The same goes for No. 2, spawning bomb under you while charging, it can easily end your run.

Take caution when picking up these items whenever possible:

  • Taking Tammy's Head or Sad Bombs is not recommended, as they release tears which count towards your hit/miss. Since they release multiple tears at a time, they will almost unavoidably cause tears to hit the ground.
  • Godhead can be dangerous as even if the aura kills an enemy, if the shot doesn't hit an enemy or poop it will count as a miss.
  • Maw Of The Void, keep your distance against non-boss enemies. If the ring kills an enemy before the tear hits it, it can cause you to miss the shot.

Reward

Completing this challenge unlocks the Kidney Stone, which occasionally prevents you from shooting. When this happens, you can charge your next tear shot to fire a kidney stone that deals additional damage.

Trivia

The challenge's name, "Onan's Streak," and the challenge conditions are a reference to the biblical character Onan, who was killed by God for spilling his semen on the ground.

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