i like the game, and it's great for a first game but there are definitely a couple of things that could be improved:
1. the difficulty is way too hard, it probably feels easy for the devs, but it's a lot harder for normal players. gmtk has an interesting vid about difficulty balancing you can check out
2. the platforming controls could use some work, i can recommend you check out gmtk's vid on platformer controls
3. having 2 separate jump buttons (w and space) doesn't feel great and gets confusing quickly
4. swinging doesn't feel great because all the momentum you had at the start of the swing just disappears into nowhere at the end, making it very underwhelming to use
5. charging the jump feels pretty pointless, just slows you down
6. there's a ui bug which gives you ghost dashes (something to do with those grapply guys)
7. having to aim pretty precisely at those grapple thingies with the mouse is pretty annoying
8. rebinding jump doesn't work
but overall, it's nice for a first game jam! great job, don't take the feedback too harshly, it's just something to take into account