Invasion... Level 1: Contamination

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Invasion... Level 1: Contamination
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Authors Andy Chen, Claude Martins
Port Vanilla Doom
IWAD Doom
Year 1994
Link Doomworld/idgames
This level occupies the map slot E1M1. For other maps which occupy this slot, see Category:E1M1.
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Invasion... Level 1: Contamination is a single-level PWAD for Doom that was released in 1994. It was designed by Andy Chen and Claude Martins. It was followed by Invasion... Level 2: The Upper Decks.

Walkthrough[edit]

Map of Invasion... Level 1: Contamination
Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.

Essentials[edit]

Other points of interest[edit]

Secrets[edit]

  1. Go through the first door and turn right. Near the first armor bonus you reach are two alcoves. Pressing the western one opens up a secret door opposite leading to a passage with a shotgun guy and two health bonuses (on medium and hard skills only), and a megaarmor which lies on a teleporter to the south-east area. Both the passage to the teleporter and the teleporter itself count as secrets. (sector 27)
  2. See #1. It is not possible to receive credit for this secret as the player teleports before stepping on the sector. (sector 28)
  3. From the blue key, head east then south. Continue through a fake wall, at the end of which is a soul sphere. (sector 118)
  4. Heading north from the blue key area, there are two passages to the west. Between them is a fake wall, through which is a partial invisibility and a lift leading up to a berserk. (sector 122)
  5. The room with the teleporters leading to the red key area has a secret door on its north wall leading via a second door and a lift to the yellow key and a box of shells. Both the sector between the doors and the yellow key sector count as secrets. (sector 256)
  6. See #5. (sector 179)
  7. Head north from the blue key area then turn right at the end and right at the end of that path. Immediately on the left is a fake wall through which is a shotgun guy on a platform (on medium and hard skills) and a nukage pit down below, which contains a chainsaw as well as (on medium and hard skills) a medikit and a spectre (two on hard skill). There is a switch which causes the platform to lower, allowing you to jump across and out of this area. Note that entering this area activates a crushing ceiling. (sector 285)

Bugs[edit]

Because one secret cannot be achieved (see Secrets section), the maximum secrets percentage obtainable is 85%.

If the player goes through the teleporter in Secret #2, he will be stuck in the south-east area unless he both has the red key and has pressed the switch near the computer map.

Demo files[edit]

Areas / screenshots[edit]

Speedrunning[edit]

Routes and tricks[edit]

Current records[edit]

The records for the map at the Doomed Speed Demos Archive are:

Style Time Player Date File Notes
UV speed
NM speed
UV max
NM100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

Miscellaneous demos[edit]

Style Time Player Date File Notes
.zip

Deathmatch[edit]

Statistics[edit]

Map data[edit]

Things 671
Vertices 1519*
Linedefs 1720
Sidedefs 2417
Sectors 389
* The vertex count without the effect of node building is 1347.

Things[edit]

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

Technical information[edit]

Inspiration and development[edit]

Trivia[edit]

See also[edit]

Sources[edit]

External links[edit]