The controls were really tough to figure out, even with the little tutorialization bit! Man, number + enter + shift-enter is a really complicated sequence to do an attack. But I'm glad I took the time to learn them, because I really enjoyed wandering around the map and exploring. I thought the map was well-designed and implemented, and I was excited to pick up new awesome weapons.
If you added a boss fight after the jam, I would totally enjoy that so I could really get a chance to make the most of my cool weapons!