UPD:
- replaced the images for displaying the amplification statuses. Now it is more clear that each power-up gives;
- added the mechanics of climbing vertical stairs. The character can move vertically, as well as shoot (if the skill of shooting in the air is unlocked) and jump sideways;
-the first level project is ready. It remains to animate checkpoints, make the transition to the next level and thoroughly test the existing location of objects, obstacles and traps;
- now the arrow breaks if fired close to the wall. The character, being at point-blank range to the wall no longer plays the animation of shooting without firing a shot;
-along the way, minor bugs were fixed.