Thank you so much friend. It's good to know that you'd support the Kickstarter. I'm getting more motivated to do it now :)
No, there isn't a save system, I'm working on it tho, don't worry. It should be within the next updates.
I agree with the grappling hook! I want to implement it as an item you can buy after certain point in the story, along with customizable modifications to the jump pack. Like skill points allocated to speed, jump height, wall-run time... Still, there's other things I need to work on before that. So, no promises but I'll keep you updated.
Now that you mention that, I need to fix the fall damage, because as you say, you die very frequently. I'll work on it today.
Thanks for your feedback, friend!