Finished Odallus with 82% completion, took me 7 hours and 24 minutes.
I strongly recommend it to anyone who likes classic Castlevania games, it's not exactly the same as it somewhat easier (though still challenging) and has elements from games like Mega Man X and even Igavanias (needing to find new abilities in latter stages to unlock secret paths and upgrades in earlier ones), but the look and atmosphere definitely evoked the classics for me.
It's an excellent action game tho and a steal at its current sale price. My only gripes are that it could really use maps for each stage ad it's hard to tell what you're missing and which stage you need to revisit in order to make progress. I've complained about this before but the sound effects are extremely loud and sound settings are limited to toggles for music and SFX with no volume options.
There were a couple of glitches that forced me to quit the current stage, but those are negligible IMO. The only aggravating glitch was the one I posted earlier, it makes the boss a very disorienting experience and I *think* it's unavoidable.
That aside tho I 100% recommend it, it's one of the best 2D action games I've played on the system, and I bought it having no idea it was from the Blazing Chrome devs; these guys are good! Consider me a fan from now on.