I did a pretty long delve into it, started with 2 str 2 dex and 1 int, ended up with dumping most points into int anyway as shooting fireballs does more damage and you can charge it faster. With no defence and no dodging it's the most viable way of playing.
First impression is very nice, variety of monsters, plenty of chests, interractions with healing fountain or traps, I found a secret in a wooden area -always a nice surprise. Some enemies could wander around, right now they all wait for a wake-up. Went through the couple of levels until I ran into Deathcaller. Next level was a big difficulty spike, enemies got like 50% more health and now Deathcallers were common enemies. They're also immune to fire status effect so fighting them was very troublesome. Also balancing is kinda meh, I found dozens of powerful healing items but all weapons were basic - I found three 2-hand swords, three basic firebook spells, one rusted sword with worse stats and one poisonous dagger with which I wasn't impressed at all.
For me, initial enemies could be tougher and you should level up faster at the start to really feel your strength is growing, later on these enemies shouldn't scale and be somewhat a reminder how much you've grown. Also new levels should slowly morph into different biomes, going through 6 levels that have no distinct features feels lazy. What's more, having a random chance to spawn an unique item or to have a closed gate that you have to look for a key might spice things up a little. I'm guessing shops will come at some point as we have prices on items?
In short - very nice start, needs more unique items and random events, more variety of enemies, change your surroundings the higher you get.