Damien intelligently cycles between states based on distance, line-of-sight, light level, and randomness:
1. WATCHING — observes from 20-40 blocks away in darkness, behind cover, out of line-of-sight

2. STALKING — follows silently from behind (no footsteps), opens/closes doors, steals items from your hotbar and drops them nearby, finds cover when spotted

3. HIDING — finds dark spots behind walls, extinguishes torches/lanterns, shatters glass windows/panes/iron bars near the player, places cobwebs & soul sand as environmental terror, peeks at player periodically with creepy sounds
   
4. CHARGING — screams on entry, charges at 2.2x speed, breaks obstructing blocks via raycast (with adjacent soft block tunneling), teleports when stuck, swims at extreme speed using forced velocity (Dolphin's Grace level), detects water ahead and jumps over it, attack cooldown every 15 ticks at 2.5 block range

5. IMITATING — 3-phase behavior: scans player buildings, teleports, then builds a corrupted mirror copy of their structures with twisted block mappings (see below); also disguises as passive animals

6. JUMPSCARE — rapid strafing around player at 1.5-3 blocks, relentless attacks every 10 ticks, stinger sounds every 20-60 ticks, ambient smoke/soul particles, extinguishes torches/lanterns in 4-block radius

7. MEGA DAMIEN — velocity-pulled toward player (no pathfinding), progressive block destruction with damage stages, 4-hit/second attacks (8 damage each); never transitions — stays until despawn