UPD:

- finished doing the mechanics of selecting health bottles (three varieties, each adds 1, 2 or 3 health points);
- Added selection of coins and animation of their movement to the counter;
- added a character’s health bar and its smooth change (the bar blinks if 1 or 2 health points are left);
- made 3 amplifiers (valid for 10 seconds, as well as strips of each amplifier and their smooth change):
1- (yellow flask) can simultaneously shoot 3 arrows;
2- (green flask) character acceleration;
3- (purple flask) reduction of the shooting period (By default, the minimum between shots should be 1.5 seconds. This amplifier temporarily removes the restriction, the character can shoot immediately after the previous shot);
- adjusted the mechanics of shooting (now when shooting at a point-blank wall the character does not shoot an arrow, also an arrow needs to be flown a bit to stick into an obstacle);
- added a claw mark (if any) when the character glides along the walls;
- adjusted the touchscreen buttons, added the buttons "Down" and "Up";
- added the function of canceling the slip along the wall - just press the "Down" button (any control) and the character will begin to fall;
- implemented a system of checkpoints;
- minor performance improvements.