simple game similar to toobin arcade game

Looking for someone to build the simplest version possible of 80s arcade game Toobin

- config file has line for image of main character so a gif that can be swapped out (default options beaver and duck)
- no animation needed for main character "paddling"
- config file with ability to add items/characters to the game with customizable features, e.g.
1) a gif (example, a bird)
2) a starting point (based on a grid)
3) a direction (360)
4) a speed, 1-5

- Controls of game are the arrows and space bar for jumping

- Config links to an file with the "river" playing field (two rivers included in project as defaults)

- main character is programmed to stay in the blue (river/water is blue, shore is not) and bounce off everything else. New river can be added and the character will always bounce off the shore/rocks in the river

- score increases 100 points every second you stay alive

- character dies when they hit shore/obstacles X times where X is set in config file

Interested in both Unity3D bids and blockchain (don't care which one, but ETH is too expensive for this I've been told)

Please tell me the total hours you need to build this.

thanks