Not bad. But could be better.
You get a 3/5 or 6-7/10 from me. I am a big fan of the epic war series. It kept getting better through 4 which is absolutely epic and still the best in my view. This was kinda cool, but to be honest it doesn't measure up and it seemed a bit rushed in some areas. It had many high points, a lot going for it, and still wasn't that bad a game. It's just for epic war it's a disappointment because you set the bar so high. So I'll mix in a bit of what you did well with a few steps of constructive criticism so you can make epic war 6 (whenever you do that) to be the greatest game ever.
Here are the areas you can fix a few things:
1. Titan Variety Great But Some Problems
I love the vast selection of titans, and it was great to have 2 Golems and Lamia(s) out at once. However, some shoulda had 2 or 3 and didn't. Lamia and Phoenix were almost useless at their current max. Golem might have used 3 but that's debatable. Also Iron fortress was great but too slow to be very practical (even for titan) and the flaming chariot didn't help. Black Dragon and Lord of Hel were just a bit too slow attacking. But overall I honestly loved the variety and choices of titans.
The biggest problem was that with the exception of Trial 1 (in which titans were actually a detriment) you could get to the point where you could just spam 6 titans, wait for them to spawn then charge (all at once minus hero), and spam regen spells with Queen Ertheriea. You have never gotten the balance of titans right. You should make it so that on harder levels you need two or three, but at the same time any more then that would be ineffective and result in a loss.
2. What Happened To Three Heroes In A Battle?
The heroes were great, for the few of them you had. But you didn't have enough, and you completely did away with what I thought was revolutionary in epic war 4 by choosing 3 heroes to take to battle. It was perfect, and you made it so we NEEDED to use the heroes (all 3) and it wasn't too easy as a result.
But now not only do we get just 1, but we can't use them past normal levels because they die too quickly and then we lose. (Missed the castle there btw) We have to leave them back behind our troops. It wouldn't be so bad if you did it like in 4. And each hero got to take 2 units each which added up to 6. That was a bit small but 3 units per hero to add up to 9 would be perfect.
3. Additional Minion/Formation Issues.
The variety of regular minions and the one's you had were great. I love how the female units (besides Lamia which is lame) always own the most. It could even be expanded upon just a bit (like the tiger warrior thing from 4) but minor details. But, 6 spaces is not enough to effectively use this great variety of units, or to balance out the needed range units, the frontal attack/tanking units, and the titans together. I believe 9 would be the magic number for that.
Also the max numbers were nerfed for some units, particularly on some of the range units which would otherwise be very effective like wizard. I love the natural elemental abilities with creatures such as succubus and witch, but the numbers (need 5 not 3) are too low. Minions like goblins were pointless because you couldn't have enough, like 35 at one point becomes 16 here. Gorilla was maxed out at 5 but used to be (another name) maxed out at 6.
Maybe improve a little more on the selection, but please just fix some of the max numbers and add 9 slots first. Do that and you'll be good.
4. Levels Need Revamping.
Some really cool ideas are taken away from because the order of level and difficulty doesn't correspond, it never get hard enough, needs more variety, and there weren't enough of them. For example, the trial level difficulty is backwards. I found 5 was easiest, then 4, 3, 2, with 1 being really hard. Also, the need for different strategy for varying levels from 4 is gone with the exception of Trial 1 (which was great in that respect as it's the only level in the game that you can't just spam random titans).
Please just fix these things and you'll have a great game. Good luck!