I know you note the lack of overall strategies for playing, but I find that to be its strength. You don't need years of play or knowledge to do well in the game -- as long as you keep your wits about you and understand how the Soulstones work (or, hell, just have another person on your team that does), anybody can dive in and have a blast.

When playing larger, more traditional AoSes, I always found big chunks of down-time where I was miles from the action, walking for ages, where just I felt like minimising and going away for five minutes while I waited for something to happen (there's my lack of strategy right there). Because MountainStruggle is small and chaotic, it's fast and full of surprises so it never lets you go. There's no assured victory and stalemates either; the tug of war between waves can range back and forward across the entire map even if you've split down a laneful of towers and it looks like a done deal.

Plus, the emphasis on Soulstones means you can be crap at PvP and still win out by finding the best Soulstone combos and creating insane spawn waves.

Well, it is my favourite AoS, of course I would say these things. :)