I like it very much, especially the aesthetic of the game.
I made it to the 3rd checkpoint and I guessed that I've seen what there was to see.
I might need to try Blockbench for myself, did you also create the animations in this?
As @Ratamata said, a little juicy feedback on actions would go a long way.
Also the 2 headed Goblin felt pretty samey to the 3 eyed goblin with a double crossbow, as both of them fired 3 bullets in not so different patterns.
But as I said, you nailed such a nice vibe.