This is well done ( and slightly reminiscent of "A Short Hike" ).
I like the simple moveset ( although I never found a use for the kick, especialy since it makes you tumble over ), and how it gets expanded over with the mechancis/gimmicks you've put in place.
I assumed you used some free to use assets for the graphics of this game, but I am supprised to find out everything was made by you ( whether it'd be for the jam or just lying around ). They look amazing- and despite not making a million different assets, you found ways to do the most with what you had availible.
This game is extremely professional, and I can't believe it only took you a week ( or less ) to make this. Absolutely great work.
My only complaint: The player randomly ragdolls while I am walking- although that might be something intentional put in place by you.