I do not see them as getting harder, but I keep upgrading my AW's to continue adding the bonuses available. Choosing the correct troops is important. Have you missed an upgrade on the tech tree, or are you getting close to one? Try thinking through the game instead of blaming. Usually when I have a hard time I find out that I have done something wrong. Once corrected things get better
The problem is that in Elvenar, and especially with the tournaments, the "game" is basically rigged against the player until you hit the final couple of chapters...
Consider that:
1. The only 2 possible military boosting AW's until end of Ch.6 are the Needles (nearly half way through Ch.3) and the Sanctuary/Monastary (end of Ch.4).
Of those, only the Sanc/MM is of any notable value early on, as your barracks is still too low a level to really get the big advantage of the training time boost.
The bulk of the military AW's are actually locked away behind the end of Ch.8 - 14. So really, until you're into WE's chapters, you're constantly fighting at a marked disadvantage, unless you can at least boost your Sanc/MM to insanely high levels and at least get the better HP boosts.
But most of your face-punching bonuses & 'freebie' troops are unavailable until the back 40% of the game. (outside of a few rare craftable buildings which seem to be few and far between now)
2. Player units & upgrades are just 'slow drips' while the enemy is always highly advanced by points X/Y/Z.
Pointless on the main map encounters, but in tournaments, it's a fething insult... The enemy starts gaining high powered 3* units by province #6, which means it's easily doable for Ch.4-5 players to be getting hosed.
Also, the fact that we're 14 friggin' chapters now and we
STILL don't have all of our own units even able to research their 3* versions yet!
3. The AI is fething hot garbage.
The fight system in this game is a bloody joke. I don't have hours and hours to waste trying to cope with the gakky battle system that's even more dysfunctional & prone to crashing than FoE's notoriously awful GvG system! (and THAT'S saying something!)
So outside of buying a gaming quality PC to deal with the awful battle engine, I'm forced to auto-battle, and all the gak that brings. Thus, my troop loses are much higher each week, and I spend more goods to negotiate the many fights the AI is too slowed to fight our properly.
Really, I've been finding that between the start of Fairies and through until end of WE's, tournaments are a fething gak-filled disaster now because I just don't have the techs & AW's available at this point to counter the increased enemy strength. (notably from the bigger 'forced' SS techs)
I figure things won't start to get noticeably easier again until I can get the likes of;
- more 2-3* upgrades on the key 'dedicated' troops. (ie: doggies + orc strats for humans/blossoms for elves)
- access to Shrewdy Shrooms + FoH's + DA + TotT's. (a couple key atk boosts for the heavy units/mages + added training size boosts)
But as of now, tournaments have gone from something that was mostly fun to a friggin' nightmare!