Triple Mod Combination

After unlocking Extreme Modification in research, you can put 3 of the same mods under the same weapon to trigger a bonus buff.
This guide will tell you what combination gives what buffs.

Unlocking Extreme Modification

On the research screen, clicking on the special tab would show you the Advanced Research.

• Modular Design - allows you to overwrite a mod once you fill the full grid (24 mods if you have 4 weapons)
  
• Advanced Mod - this gives the mods a bonus buff (the additional buffs in brackets)
  
• Extreme Modification - this is what enables the triple mod bonus.

As the text says, you just need 3 of the same mods in the same weapon. It can be in any order (e.g. you can mix the 2 types of mods). This is a bit of a test on RNGesus... but the benefits are worth it.

Triple Mod Combination

Noticed RNG failed and I miss that last Super Duration...

Here is a list of known Triple Mod Combination effects:

Mod Name	3x Bonus
Ammo	Removes Ammo negative effect
Armor Break	Ignore enemy's invincibility
Armor Pierce	Removes negative effects of Armor Pierce
Bouncer	Reflect deals area damage
Burn	Burn effect +100%
Chain	Ignores distance to trigger Chains
Challenge	Damage +300% when enemy is at full health
Corrode	Corrode effect +100%
Crit	Base damage +20% on a crit
Destruction	Triggering has a chance to drop extra EXP
Drone	Drone launches missiles
Duration	This weapon's duration is increased by 1.5x
Electric	Shock duration +3s, shock effect +100%
Eliminator	Enemy projectile become an allied projectile and recover Energy
Engine	Each 1 Projectile Speed increases the damage by +5%
Enlarge	This weapon's range is increased by 1.5x
Frost	Freezes target
Light Machine Gun	Repelling bullets +2 Penetration
Lightspeed	Each 40% Shot Speed Increases Damage by +10%
Knockback	Each Knockback increases damage by 5%
Melee	Crit Rate +20% at short range
Mini Mine	Mine Range 200% and starts moving
Recycling	Low chance for a Modification box
Repair	HP +80%
Recharge	Annihilator charge +2
Shrapnel	Turns into rockets (has small AoE, no guidance unless you have Tracker)
Snipe	Crit Rate +20% at long range
Spread	Chance to leave electric storm after triggering
Super Ammo	Negative effect of Super Ammo reduced by half
Super Armor Pierce	Negative effect of Super Armor Pierce reduced by half
Super Crit	Negative effect of Super Crit reduced by half
Super Duration	Negative effect of Super Duration reduced by half
Supersize	Negative effect of Supersize reduced by half
Tracking	Enhanced Tracking Range
Tracking Missile	Leaves flames upon hitting

Favorite Combinations for Master Mode

Ray (Sniper):

• Super Ammo x 3 + Super Crit x 3 + Change to Scatter (cone shape).
  
• Avoid or overwrite Advanced Mod random buffs that gives duration bonus.
  
• This works like a broom and sweep up anything that comes close.

Behemoth Laser (Power):

• Super Duration x 3 + Armor Break x 3 or Challenge x 3
  
• Stacking duration enables this to fire like the Hyper Mega Particle Cannon in Gundam, which makes it quite effective against elites
  
• Armor break is recommended for stages with mobs that are invincible, such as stage 1 boss or those stage 4 elite mobs with the spike knuckles

Black Hole Cannon (Control):

• Chain x 3 + Frost x 3
  
• Perhaps the most effective CC in game... this helps you freeze most of the mobs in place, turning Master Mode into EZ mode
  
• Advanced Mod random buff that gives duration +10% is recommended.

Guardian (Squad):

• Repair x 3 + Recharge x3
  
• 4 auto-aim machine guns to proc mini HP & Energy recovery
  
• Best part is the raw HP increase and max Annihilator charge +2, the latter scale with all the Passive Upgrades.

Special Thanks

Special thanks to The Nue from the forum.
He tested and contributed most of the combination list here, see the thread here.

Also thanks to Konri_one (K_o) for confirmation and correction on some of the mods :)

[sleepydumbdude]

Thanks, that Ray was OP. I went from struggling on Master and taking like 7 minutes on the boss to doing it in under 2. Put on specialist and used it and overlay energy shield and went through all of hellfire and still have my 5 life achievement left. It's a shame I have to die on purpose 4 more times to complete the game..Only lost like 2 lives the whole time and no games thanks to that.

[Happysin]

Guardian Heal can be replaced with Chain if you want something that lets you proc your special all the time. Works great with a Behemoth Laser.

[Xeru]

Thanks you