Updating this advice for On Alert.
I've left the build pretty much as per ashen's initial advice.
I've only really suggested Travel Powers (fire flight 'coz it's just right and teleport as an escape power) and removed the Pre since Thermal Reverb will no longer be scaling of it so I've swapped it for Ego, the 3rd super stat.
PowerHouse (Link to this build)Name: Inferno AT Guide BuildArchetype: The InfernoSuper Stats:Level 6: Super Recovery (Primary)Level 10: Super Endurance (Secondary)Level 15: Super Ego (Secondary)Talents:Level 1: The InfernoLevel 7: Amazing Stamina (Rec: 5, End: 5)Level 12: Wordly (Ego: 5, Rec: 5)Level 15: Daredevil (Ego: 5, End: 5)Level 20: Quick Recovery (Con: 5, Rec: 5)Level 25: Boundless Reserves (Con: 5, End: 5)Level 30: Ascetic (Con: 5, Ego: 5)Powers:Level 1: Throw FireLevel 1: Fire StrikeLevel 6: Fireball (Rank 2, Unstable Accelerant)Level 8: Fiery Form (Rank 2, Rank 3)Level 11: Pyre (Rank 2, Backdraft)Level 14: Fire Shield (Rank 2, Rank 3)Level 17: Conflagration (Rank 2, Burning Rain)Level 22: Thermal ReverberationLevel 27: Immolation (Rank 2, Rank 3)Level 32: Heat Wave (Rank 2, Engulfing Flames)Level 40: Flashfire (Rank 2, Sweltering Heat)Travel Powers:Level 6: Teleportation (Rank 2, Rank 3)Level 35: Fire Flight (Rank 2, Rank 3)SPEC TREESI've taken the info & advice from these 2 threads:
Specialization Tree Info by Ryko_Nailo
forums.champions-online.com/showthread.php?t=145568Guide to Spec Trees by Dr.Sage
forums.champions-online.com/showthread.php?t=145720I've shortened Dr' Sage's advice in some areas though.
Recovery TreeMastery 1/1Increases all Super Stats by 10 points
Rec Mastery buffs all your Superstats (Primary and Secondary) by 10 points (so 30 stat points total). I raged, etc. Take it if you don’t have a better option, but it’s not going to make or break a build.
Supercollide: the other 2 tree's mastery are useless to you, take this.•Gear Utilization 3/3Increased Offense and Defense from Items
6% / 12% / 18% More Offense and Defense
A Good Choice
Supercollide: this will stack with the choices in Guardian.•Withstand
Secondary Super Stats now give Mez Resistance
1 / 2 Mez Resistance per 20 in Secondary Super Stats
Gear version is Better
•Rapid Recovery 3/3Recovery now increases Health Regeneration, aka Heals every 3 seconds
~17.5 / ~35 / ~52.5 HP a Tick at ~175 Rec
the best of the “make x grant heal over time” talents, you only Heal - Take it
Supercollide: A heal on an AT??? take it, take it now!.•Staying Power
Recovery now gives more max Energy
50% / 100% Max Energy per point
Meh, More useful when combined with Super Charged and without End as a superstat (as it gives you more wiggle room to stay in the 91%+ of max energy range)
Supercollide: SS Rec & End - you won't need this.•*Super Charged* 2/3Increased Crit Chance while Energy is over 90%
5% / 10% / 15% Crit Chance
It gives a whopping crit chance buff if you’re over 90% energy (15% at max rank), but the practicalities of using multiple crit-capable powers while staying over 90% energy somewhat get in its way. Worth trying, especially if you’re an AT locked into the Rec tree.
Supercollide: you've got a decent chance of procing this relatively often, especially on an Alpha strike.•*Efficient*
Energy Reverbs give more Energy
5% / 10% / 15% More Energy
If you’re making use of your Energy Unlock often, this can be pretty good. Especially when combined with Super Charged, as it’ll help you stay above 90% energy.
Supercollide: SS Rec & End - you won't need this.•*Well Rounded*
Non-Super Stats now give max Health and Energy
1 HP + 0.1 Energy / 2 HP + 0.2 Energy per point
Not that interested.
•*Second Wind* 2/2Secondary Super Stats now give Power Recharge
~5.5 / ~11 Power Recharge at ~150 Stats
Not bad if you’re using things with Recharge (like Active Offenses or Dark Transfusion).
Supercollide: get Immolation firing more often? - yes please!.Avenger TreeMastery
If you Crit 2 times in 5 seconds, Blast powers Charge time is reduced by 50%
Supercollide: Useless to an Inferno, you don't have any blast attacks.•Ruthless 2/2Increased Crit Severity
5% / 10% Crit Severity
Take it if you crit.
•Can't Touch This
Energy Builder has a chance to cause a 20% speed Debuff (Dazed) for 4 seconds
33% / 66% / 99% Chance to Daze
Doesn’t stack. Don’t bother
•Anguish
Ranged Crits cause a Penetrating DoT hitting every 2 seconds for 6 seconds
12.5 / 25 Damage a Tick
This is bad, but Avenger’s first Tier is pretty horrid anyway. This makes your Ranged Crit inflict a lingering DoT that penetrates defenses/shields. Damage is looow (double-digit low). It’s better than Can’t Touch This and arguably better than Round ‘Em Up, but no one takes Avenger for its Tier 1 talents.
Supercollide: might be useful on a boss but compared to your more powerful attacks it's going to feel like trying to bleed a boss to death via a papercut.•Round 'Em Up 3/3AoEs cause further AoEs to do more damage for 10 seconds, stacks to 3
1% / 2% / 3% Damage increase
Damage buff is low, but it’s better than the rest of the non-Ruthless options in the Tier if you use ranged AoEs. Which you do, right?
Supercollide: you'll be using AoEs plenty.•*Surprise Attack* 2/2ST attacks have higher Crit Chance to targets over 90% Health
10% / 20% Crit Chance
This is a nice crit buff (20%) to ranged ST attacks...at things that are over 90% health. So your opening strike is more likely to hit harder. Good if you’re having trouble wiping out a single minion with your opening salvo. Would be good for sniping other players, but PvP is dead and any self-respecting sniper is going to try to guarantee his only shot crits (hi2u Imbue).
Supercollide: and if your energy is over 90% too......•*Relentless Assault* 3/3Maintain attacks increase Offense for 8 seconds, stacks to 5
10 / 20 / 30 Offense
This? THIS is why people put up with the utter crap that is the rest of the Avenger tree. If you’re using a maintain, take this. No ifs, no ands, no buts. If you don’t use a maintain? Take it just to use this. It’s that good. Rank 3 is 30 offense per stack, it stacks to 5 (quickly). 150 Offense for trying to kill things anyway? It’s a no-brainer. This also works with those “add x % of your defense as a boost to your offense” skills.
Supercollide: Ashen's build has 2 maintains there, hehehehe•*Offensive Expertise*
Active Offensives recharge faster
7% / 14% Recharge Reduction
Active Offenses recharge faster. Still a good talent if you use AOs. Avenger tree just makes me grumpy.
Supercollide: decent but we're getting power recharge elsewhere•*Preemptive Strike*
Ranged Blast attacks increase damage for the next non-Blast Ranged attack
5% / 10% / 15% Damage increase
Supercollide: Useless to an Inferno, you don't have any blast attacks.Guardian TreeMastery
Blast powers grant Alacrity. Alacrity reduces Charge time on Blast powers by 3% and gives 9 Dodge Chance Rating, stacks to 3
Supercollide: Useless to an Inferno, you don't have any blast attacks.•Fortified Gear 3/3Increased Defense from Items
10% / 20% / 30% More Defense
Works well with “The Best Defense” talent.
Supercollide: More defense for a squishy AT and Best Defense turns that into Offense too! .•Locus 2/2AoEs grant a stack of Locus, upon reaching 30 stacks they are consumed and the Locus Explosion buff is applied granting increased Offense and Defense for 15 seconds, prevents stacks of Locus from being earned.
25 Offense & Defense / 49 Offense & Defense
Hitting with an AoE or getting hit with an AoE grants a stack of Locus, at 30 stacks you get the Locus Explosion buff (+Offense/Defense for 15 seconds). This works with “The Best Defense”, so it might be worth it if you use AoEs.
Supercollide: you'll be using AoEs plenty and it's more stacking with the defense / offense buffs.•Make It Count
Increases Damage and Lowers Energy Cost of Blast attacks
2% / 4% / 6% Damage and Energy Cost
Supercollide: Useless to an Inferno, you don't have any blast attacks.•Ruthless 2/2Increased Crit Severity
5% / 10% Crit Severity
Same as the one in the Avenger tree
Supercollide: and stacks with the one on the avenger tree too.•*Retribution*
ST attacks against you have a chance to proc Retribution causing increased Damage and Heals you every 2 seconds for 6 seconds
5% Damage and 30 HP a Tick / 10% Damage and 60 HP a Tick
single-target attacks aimed at you proc a buff ( Retribution) that gives a nice Damage buffs and a Heal over time 6 seconds. If you expect to be hit often, this is pretty good.
Supercollide: you don't want to get hit.•*Tenacious*
Upon taking damage, gain Offense for 15 seconds, stacks to 5, 1 second cooldown
5 / 10 Offense a Stack
Take it if you get hit.
Supercollide: you don't want to get hit.•*Find The Mark*
Ranged attacks have a chance to place an Exposed Debuff causing them to be 3% easier to Crit with Range attacks for 10 seconds, stacks to 3
10% / 20% / 30% Chance of Exposing
This gives a chance for your Ranged attacks to debuff the target to make them easier to crit. Not bad if you have points to spare and use crits, but the other options (TBD, Tenacious or Retribution) are pretty much better. Even 3 stacks of this is only 9% increased crit chance for a few seconds.
Supercollide: ok, but i'd rather take the stacking defense / offense buffs.•*The Best Defense* 3/3Gain a portion of Offense from your Defense
33% / 66% / 99% of Defense boosts Offense
Amazing.
Supercollide: totally awesome!.GEARINGGear for Rec, End & Ego as superstats (try to balance Rec & End so equilibrium is 90%+)
Add Dex for crit chance and any +crit chance gear will be a boost too as thanks to the ruthless specs your crit severity should be nicely high but without crit chance it's going to go to waste.
Add a bit more Con for a bigger HP pool.
), eb 2 hits (2 hits can build his energy from 30 to nearly 180 
i can't do that with marksman.) then conflag.
