Rabid

Rabid is a single-level PWAD for Doom that was released in 1994. It was designed by Nick Foster.

Secrets

 * 1) From the start, go through three doors to reach a room with a switch. To the west of this switch is a secret door leading to an area with 4 shotgun shells (8 on hard skill), a shotgun, a box of rockets, a medikit (hard skill only), three shotgun guys (hard skill only), two demons, and a spectre (three on hard skill). (sector 106)
 * 2) The secret area accessed by #1 also has three other entry doors, all of which count as separate secrets. One of these is just east of #1. (sector 107)
 * 3) Another entry door (see #2) is to the west, and can be reached by heading up the short staircase from the nukage room in the south-west. (sector 105)
 * 4) Another entry door (see #2) is to the south, and can be reached by heading east from the blue key. (sector 128)
 * 5) The north-western room with the crates has a secret door in the north-west (marked with a misaligned texture) leading to two armor bonuses, a medikit, and a partial invisibility. (sector 57)
 * 6) The dark passage that leads to the trigger that lowers the nukage north of the blue key counts as a secret and is impossible to miss. (sector 81)
 * 7) After lowering the nukage north of the blue key, there is a secret door to the west (marked by two dead players) leading to a chaingun and a box of bullets. (sector 87)

Bugs
On hard skill, a spectre and an imp are stuck together inside the central monster closet and thus never teleport in, making 100% kills unachievable.

Current records
The records for the map at the Doom Speed Demo Archive are:

Player spawns
This level contains one spawn point:
 * 1) facing east. (thing 199)

Things
This level contains the following numbers of things per skill level: