This is a really fun interpretation of the theme, and it's really great seeing other Unreal games!  I love the sounds you chose, falling in the water sounds awesome and I didn't expect Steven to yell at me.  This game has a lot of charm.

My first couple quotas were really difficult, all combine items and I had a hard time remembering what objects I need to combine into what and where to get them.  There was a lot of running around and I timed out multiple times.  Once I got the hang of it though it was no big deal.  It's also intuitive to interact with the door afterwards, but it's not obvious.  I would suggest trying to guide the player to it after they successfully fill the quota.  

Awesome job!