The Terrible Two

References: 

Audio:

Jump SFX:  mixkit, https://mixkit.co/free-sound-effects/jump/

Sprites:

Rocket: morgan3D 2013, https://opengameart.org/content/2d-spaceship-sprites-with-engines

Water: GrumpyDiamond 2016, https://opengameart.org/content/water16x16

All other sprites and tiles were imported from the Unity Asset Store.

More information can be found here: https://docs.unity3d.com/520/Documentation/Manual/AssetStore.html .