Well I guess people are now finally catching on and showing some interests so here is a list of potential items that can be gotten. But here are some facts: 1. You can only get them from the Primevil Lich spawn 2. There is a chance that 1 item will respawn during each tier of the spawn starting from the beginning. Sometimes you get only 1 item respawn from the entire spawn. Sometimes nothing spawns at all. 3. When the boss is killed all environmental introductions disappears. Items can be gotten are: 1. Vat pieces (6 pieces in all) 2. Rack pieces (8 pieces in all) 3. Levers (8 colors) 4. Ank (2 pieces) 5. Giant Head Skull 6. Iron Maiden 7. Nameless mounted pixie statue 8. Large green crystal with pedistal 9. Large black spikes 10. Small black spikes 11. Rune symbols (large, small, small red) 12. Dragon head trophy (8 pieces in all) 13. White Lava tiles (some animated, some not) 14. Wall pieces (3 types) 15. Grave stones (many shapes) 16. Grave dirt patches 17. Brambles 18. Fallen branch 19. Piles of skulls (many shapes) 20. Banana Trees large and small 21. Death Vortex 22. Pillary pieces - many 23. Chopping block pieces (blocks, axe) 24. Giant cacti tree 25. Red Sparkles 26. Red and Black Bone Containers (from solving the lever puzzle) 27. Grusome Standard different graphic than Level 5 Doom Arti 28. Giant Demon Skulls 29. Dark Blue Rocks and Boulders There might be more so add if you know more.