Bug fixes & improvements

• fixed water reflection
• fixed water neighbour tiles bug 
• fixed boss AI
• fixed level pathfinding
• fixed time spent
• improved bullets collisions
• reworked level generation
• new rendering system for entities

New features

• entities now blink as they take damages
• destroyed walls now generate smoke particles
• added "killed by" on Game Over menu
• added Auto Grenade Launcher Tier 2 weapon

Gameplay changes

• better level generation
• boss levels are now regular levels with a boss room at its end, boss spawn when entering boss room
• altar now spawn all ennemies at once