Simple and sweet, very pleasant. I don't have a lot to comment on tho.
Visuals are very amusing, love the ascii stickmans, always fun to see. Animations are a little awkward, specially the attacking one, I really have no idea what my stickman is supposed to be doing when I press J lol. I think it's supposed to be a punch? It kinda lacks any sort of... well, PUNCH! As in, it is way too soft and smooth, it doesn't feel like an attack at all, it looks more like I'm trying to grab something on the wall or something.
I really love the fists upgrade tho lmao. Just the word "FISTS" randomly floating there and then just having "FIST" on my character's hands is just mwah, perfection xD
I also liked the little cinematic intro, and I like all the crew members around, always love having someone to talk to.
Combat is surely something that exists... But it really is just "stick your face on the enemy and spam". Everything feels and look very soft so it's hard to tell when something is damaging you or the enemies. Sure, we flash for a little bit but that's kinda it. It really needed a little bit more of feedback, and impact, wich goes back to the attack animation feeling way too soft.
Also, I have the duty to be annoying: LET ME JUMP WITH W!!!
Personal preference, but I just don't like the spacebar lol, so giving your player options is never a bad idea. You used J for attacking, if you're not gonna let me jump with W then at least give me the option to do so with K right besides it. Anything to spare me from the devilishness of the evil big bar buuwwaaaah