The 骷髅狙击手 is an uncommon post-世纪之花 困难模式 地牢 敌怪 that attacks from long range. A Skeleton Sniper approaches a targeted player slowly and, as soon as it has a clear line-of-sight to the player, pauses briefly before firing a single shot. This shot can be fired from offscreen, and deals enough damage to kill a player with maximum health in three hits (two in Expert Mode).
These enemies spawn relatively infrequently and are considered by the game to be rare monsters, causing them to appear on the 生命体分析机.
The Skeleton Sniper spawns most often in areas of the Dungeon backed by Slab Walls, along with 生锈装甲骷髅 and 褴褛邪教徒法师s. Removing these naturally occurring back walls will prevent these enemies from spawning, but they cannot be replaced to spawn these enemies elsewhere. These areas can further be identified by the presence of 丐帮帮旗s and 秀逗连队旗s, but these banners are purely indicative and do not influence spawning.