both wasd and arrow keys saved this for me, spacebar to jump too.

Pretty good it gets hard pretty quick but not too quick very charming design.

It's almost perfect… except it's a bit short.

The movement and platforming are amazing and fluent, the mechanic about traversing through the edges of the screen is cool, and the quacking when you die is pretty funny.

I wanted to talk about how you're taught about the screen-edge traversal in the first two levels and then it's not used in a while… but it's used in the final stages again, so that's a moot point. I may feel the key's hitbox is a bit too small (there's a level where you walk underneath the key without collecting it even though you're almost touching it) – but that's a really minor detail.

So overall, it's an impressive little game that is unfortunately over just as you feel things are starting to pick up.

This is a really lovely game with simple nice-looking 2D graphics and catchy music. I enjoyed challenges it gave me especially in last 2-3 levels and the ending was adorable. The only elements I feel to suggest to make it even more interesting is adding new levels, maybe even power-ups to help the duck during the most challenging tasks for example endurance to spikes for 5-7 seconds and/or giving the duck possibility to make higher jumps if catching a specific power-up that is time-constrained (i.e. 10-15 seconds). Even adding secret levels, a plot behind the duck's task that may explain the ending (maybe it's just symbolic of reaching someone's heart by finding the key to make the relationship blossom) and medals might make the game even more enjoyable. As last thing I would suggest to add a button before running the game that tells the player which commands to use (WASD or arrow keys for movements and spacebar for jumping) even if the mechanics of the game are simple to be easily grasped.

Besides these suggestions I liked the game a lot and it has the potential to become something really interesting. I liked chiptunes during levels, they really have a nice upbeat vibe^^
Welcome to NG and keep it up!

Robust and fun like a simple phone game. I dig it