v1: Initial release v2: Added horizontal scene-switching v3: Added a character model and animations v4: Added slopes v5: Added wall sliding and jumping v6: Added new scene layout and vertical scene-switching v7: Added spikes and lava v8: Added moving platforms v9: Added collectibles and a HUD, along with jumping and death sounds v10: Added checkpoints and a title screen, along with keys and locked doors v11: Added enemies v12: Added rotating platforms v13: Added semisolid platforms v14: Made it so that enemies don't respawn after defeated v15: Added spikeball and homing spikeball enemies v16: Added lore, double jumps and a boss cutscene v17: Added a boss fight and achievements