Long story short - below it's short version history of this game, it was my attempt to document all my changes (i failed with it, but learned a lot).
Change log:

v-0.0.6:

- add another enemy (larger hp and exp drop)

- created/extracted velocity component

- refactored health component

- add system of gradually rise difficulty

- add wizard animation

v-0.0.7:

- add some map structures(just few for testing)

- add animation for coin pick-up

- add animation for experience pick-up

- add animation for damaging enemies

v-0.0.8:

- improve path finding system

- now on collision player can slightly push enemy

- make map smaller

- put custom objects/walls on map
- reduce player health to 40

- double enemies health 10 -> 20, and 20 -> 40 for wizard

- wizard dodge in player side after tacking a damage

- add thanks on final screen

v-0.0.9:

- return old pathfinding system

- add larger map with some objects

- new skill system (choose one to start)
- add some bosses
- add ACTIVE skill - now by default - space = dodge in movement side

- add button to continue game after timer ends

- rebalance weapons

- add hp up / restoration cards

- add custom fonts

- add automatically styling of cards depends on skill group

    bugfix: v-0.0.9.1 - v-0.0.9.2 - v.0.0.9.3

    - dodge have fixed velocity - not depend on fps now

    - on death removed button continue

    - fix empty skill list crash game

    - less starting hp and less heal on lvl up

    - boss hp and speed depends on player lvl

    - boss and enemies dmg changes after 40 lvl (enemies 1->3 and boss 10->20)

v-0.1.0:

- add new font to project

- add floating damage component

- fix for flash component

- add card animation

- theme overrides for buttons and progress bars

- animate end scene appearance
- add ability choosing control by 1,2,3 on keyboard

- add vignette to mask the main screen

- add vignette reacts on damage taken

- boss hp and speed reduced by 20%, enemies hp reduced by 40%

- player hp static and raised to 33

- damage from simple enemies 1/2, wizard(2/4), bosses(10/15) -> depends on player lvl (till 40 lvl/after 40 lvl)

- add hp bar in bottom of screen, rework xp bar

v-0.1.1:

- bugfix

- rebalance of skill upgrades

- enemies respawn if too far from player

- enemies faster if not die too long

- spawn system rebalance

v-0.1.2:

- add first (shitty but free) sounds

- hit sound and death sound

- more exp gain now

- new experience vials dropped now (depend on amount of exp) red > 200, blue > 150, green_headed > 100

v-0.1.3:

- add menu

- add properties screen

- add sound control

- remove pause button(replaced with menu)

- add game music

- add menu music

- bug fixing

v-0.1.4:

- add screen transition with custom shader

- fix buttons size

- fix bug on restart reset all skills

- fix additional exp was calculated from coins also

- add savings to game

- add reset button to reset savings

- change ui HUD (some simple icons placed in right top corner and bars in bottom)

- add full screen on F button

- fix bug - hp was not updated after lvl up

- add restart button in main menu

- fix bug when some counters not work when paused

- add meta upgrades system(progress saving in game)

- add shop for upgrades

- rebalance game - require upgrades to win

- add hp regeneration meta upgrade

- add hp sword/axe dmg up meta upgrades

- add reset savings button

- review collision policy (enemies after collision move .3 sec)
- add sword size skill (to be equal by power to axe)

- add increasing pick up radius skill

- change after lvl up healing now depends on max hp

v-0.1.5

- refactor code now enemies inherit from basic models

- add new ranged enemy - Cyclopes

- add new ranged enemy - ranged Wizard

- modify - skills can interact with projectiles

- rebalance gameplay

- add new skill - Bow

- add active bow usage

- add Energy system to game

- add new self upgrades

- add bow upgrades (arrow number, shots number and Damage/Speed)

- dodge now require energy and internal cooldown

- upgrades in shop are cheaper

v-0.2.0

- fix bug when clicking the hp bars - shots are not emitted

- add particles on dodge action

- rebalance arena - 10 min for win

- after 10 min bosses will spawn eventually more often

- add some instructions how to play

- add difficulty choosing

- fix bug when accidently click was counted as card choose

v-0.2.1
- rebalance late game

- change name

- small fixes

- fix freezes on web version(preprocess particles while game loading)