First impressions: (crossposted from reddit)
My initial blind run got to wave 14. I took Hector/Erk/Pent/Farina for the balance and variety. Farina died early on, and I didn't realize you needed an item to use specials/Bolting (which I didn't end up spending on), so my main carries ended up being Hector and Erk, and I ended up just statboosting Erk mostly because of his range and finishing blow (+50% atk when the opponent is missing HP, more scary when it showed up on an enemy). In hindsight I would probably have started with a healer for my team instead with how I was usually buying 3 vulneraries to keep HP up each round. In the end the last round only had 2 enemies vs. solo Erk, but in the end I was checkmated by a Distant Counter blue wyvern with no heals left. There was also a Harken but his Brave Sword ended up doing 0 damage to Erk thanks to its -20% attack debuff on initiation.
I noticed that chests were mentioned, but I think I only saw one appear on the first round? That or the graphics may not have loaded properly afterwards. I'll probably have to play again to see how that works fully.
Overall as others said, a fun experience reminiscent of early FEH and I like how you've incorporated several of its skills as simple singular 'weapons'. Being able to see all stats in the UI at a glance with each enemy being a unique class is also helpful.