check the reports. maybe it's connected with critical hits. What about your invader knowledge? are they have full upgrade?

Sorry if the printscreen is in french !

You can upgrade all you want and still not see a significant increase.  When it comes to ubers you will need hero energy.  Sadly it isn't available in the shop.  It rarely shows up in a deal.  I have been waiting for 2 weeks.  Plarium keeps listing the same deals.

Good Luck,

Dude, it's not only my opinion but this knowledge not enough for the efficient attack to ubers. I advise u make invader's knowledge better. hero's offense, critical hit and sustained attack

It would seem that you are knowledgeable with respect to killing invaders, so would  likely be aware that it takes nearly 1500 units of energy for one hit on an Uber.

Ubers are not supposed to be as easy to kill as the normal invaders 

Update:

Time for a rethink??

Perhaps

Yesterday, I watched someone attack an Uber, I didn't count how many hits it took ,there weren't that many, and the Uber was dead at a point  somewhere between 80% and 90% energy remaining.

No way of knowing  what kind of skill sets were operating, or the calibre of the hits made.

Well, I'm at town lvl 29, Hero lvl 60 (not that this would tell anything), have maxed out Invader skills like proposed in the thread above, have maxed out the Invader knowledge, use Invader gear at max. level.

I'm able to kill an Uber with 40 normal (sustained) hits until I reach a bonus of 600% (maximum in game). The remaining 30-45% (depending on the number critical hits) I do with one enhanced attack (must use around 5-10 normal attacks).

With that I use up around 40-50k energy (one hit is around 940 energy) in about 3-5 minutes.

Just keep on going, all beginnings are hard but because of that you will be able to build max. Invader gear due to the "droppings" ;)

That guy that XYZ describes used probably the enhanced attack after just a few sustained attacks, but using a tremendous amount of energy. IMHO not worth it.

Thanks for your sharing your experience here.

Shortly after my last post I watched another attack from a different player on an Uber, this one took much longer to kill .

Its useful to know that even at such a high level,you still struggle to kill Ubers, and the drop in the amount of energy required for one hit at your hero level ,is not that significant, compared to lower levels, such that you still need loads of energy to kill one

trevor.trev1 said:

Watch out for system bonuses too, Heroes energy depletion of 10% makes a difference to amount of energy per hit. It mounts up over 40-50 hits per uber.

Yes, I was aware of this, but am yet to be convinced of  the net benefit of the 10% reduction in energy requirements when hitting any invader.

It is true that you save on energy,whether you do single or enhanced attack, but the items the invader  drops seem to be less in number when you use less energy, as also appears to happen when you get critical hits, especially with enhanced attack, or when the invader is killed.

Hi you need at least Hero lvl 45 so you can make and use these Invader Armor Pieces that make up the Hero Armor.. (Remember only make Legendary Pieces & gems otherwise its a waste of material.)

Then you need to make Your Legendary Hero Armor Which you get the material for that from Royal Guardsman Invaders.. This Armor is a MUST and it will help you kill all invaders as well as Ubers faster using less energy..

list of items & Gems that make up your Hero Armor is.

Sword Of Vengeance, White Boots, 2x Plated Gauntlets, White robe, Guardsman Helmet,

add these gems to each piece (Amber = March Speed), (Peridot = Hero's Energy 250 Units), (Emerald = Hero's Energy Restoration 3%) im yet to find a Rune thats for Hero Armor.

to attack Ubers you need at least Invader lvl 5 knowledge

then ya need to max out these to 10.

Hero offense I & II

Critical hits I & II

Hero's Sustained attack I & II

Reduced Invader Defense.

and to do all that they will make you fill in the rest anyway on that tree up to lvl5 invader:) if your rich then upgrade to lvl6 invader as its going to cost you a tone of cash. Boosts & res ;)

Then in hero's Abode / Hero's Skills / Invader 

Put 10 in Weaken Invaders, then 10 in Hero's Energy Restoration, then 10 in Hero;s Energy Depletion, then 15 in Hero's Total Offence, then 15 in Hero's Sustained Attack.. then as you increase ya Hero to lvl60 max out First Hero's Energy Depletion then max out Hero's Energy Restoration and Leave Increased Hero's Energy empty.. 

I'm lvl60 hero and lvl30 palace and i haven't been given anymore points..  

I'm Hero lvl60 invader lvl6 maxed out, and i kill Ubers with 55k Energy. you can also add the + 20% Hero's Offense Sword that can be only be obtained from Packs in the Bank. which will reduce the amount of Energy you use also...

+ Remember before you go killing Invader/Ubers make sure ya add the Hero's Experience which increases the Hero's Experience by 25% for 24 hours. and if ya got it the Hero's Offense Sword.  there is also in packs a 10% Hero's Offense Sword so be careful of that if you want the 20% offence sword.  

and that's all ya need so on that note happy Invader and Uber killing ;)