Invasion... Level 2: The Upper Decks

Invasion... Level 2: The Upper Decks
The starting area
Authors	Andy Chen, Claude Martins
Port	Vanilla Doom
IWAD	Doom
Year	1994
Link	Doomworld/idgames

This level occupies the map slot E1M2. For other maps which occupy this slot, see Category:E1M2.

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Invasion... Level 2: The Upper Decks is a single-level PWAD for Doom that was released in 1994. It was designed by Andy Chen and Claude Martins. It was preceded by Invasion... Level 1: Contamination.

Invasion... Level 2: The Upper Decks was featured in Doomworld's Top 100 Most Memorable Maps, placing 83rd, and is also included in the Top 25 Missed Cacowards.

Walkthrough[edit]

Map of Invasion... Level 2: The Upper Decks

Letters in italics refer to marked spots on the map. Sector, thing, and linedef numbers in boldface are secrets which count toward the end-of-level tally.

Essentials[edit]

Other points of interest[edit]

Secrets[edit]

In the south-east of the room surrounding the room with the switch that opens up the door to the exit is a secret door leading to a shotgun. (sector 90)
The east wall of #1 is fake - walking through it leads to a room with a door. (secret 1012)
Go through the door in #2 - you will reach a room with some medikits, some ammo, and an armor (two on multiplayer). (sector 1014)
Go west from the crossroads just west of the area from which #1 is accessed and go north through the yellow door. There is a secret door on the west side (marked with a misaligned texture) leading via a lift to a dark room with a switch on its south wall. (sector 306)
The switch in #4 raises another switch in the same room as the ones that open up the locked doors in the eastern room. This switch opens up several further secrets. One of them is a room in the southern part of the corridor leading north-east out of the south-westernmost area (the part the bridges travel over). This room contains two imps (three in mulitplayer) and some ammo. (sector 981)
From #5, head along the corridor to the north then take the door that leads north then west. The switch in #4 has opened up two secret areas opposite each other, each containing some imps, two armor bonuses, a medikit, a box of bullets (medium and hard skills only), and a box of shotgun shells (hard skill only). (sector 970)
See #6. (sector 983)
#6 contains a switch which lowers a platform passed en route, containing a soul sphere, a light amplification visor, and a megaarmor. (sector 963)
Just west of the exit room is a path leading north via several doors and switches to a large pink-floored room, at the western end of which are a megaarmor, a soul sphere, and an invulnerability. Approaching these raises some steps, allowing them to be obtained. The sector between the two short red pillars counts as a secret. (sector 1083)
Continue further along the corridor from which #4 is accessed. Just before the T-junction is a fake wall leading to a room with some imps, a stimpack and a partial invisibility. (sector 1174)
The corridor containing #5 has a fake wall to the east leading to a room with some imps, a stimpack, and a medikit. (sector 1179).

Bugs[edit]

Demo files[edit]

This WAD features three built-in demos by the authors. All require Doom v1.666 to view them. The demos are:

Demo	Skill	Tics	Length
DEMO1	3	10058	4:47.37
DEMO2	3	8912	4:14.63
DEMO3	3; 2-player coop	50403	24:00.09

Areas / screenshots[edit]

Interiors
The corrupted area
Secret throne room
Security check
Yellow key area
Medic bay
Blue key area
The key center
Lower decks
Computer mainframe
Red key area
The lookout
The exit

Speedrunning[edit]

Routes and tricks[edit]

Current records[edit]

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

Run	Time	Player	Date	File
UV speed
NM speed
UV max	15:11.14	vdgg	2010-11-08	inv2-1511.zip
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on November 30, 2021.

Deathmatch[edit]

Player spawns[edit]

This level contains twelve spawn points:

facing north-west. (thing 3)
facing north. (thing 4)
facing east. (thing 5)
facing north-east. (thing 71)
facing south-west. (thing 562)
facing north. (thing 563)
facing west. (thing 564)
facing north-west. (thing 565)
facing south-east. (thing 566)
facing west. (thing 705)
facing north-east. (thing 713)
facing north. (thing 714)

Statistics[edit]

Map data[edit]

Things	717
Vertices	4596*
Linedefs	5262
Sidedefs	7287
Sectors	1185

* The vertex count without the effect of node building is 4078.

Things[edit]

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

Single-player
Monsters	1-2	3	4-5
Zombieman	4
Shotgun guy	19	33	35
Imp	90	168	195
Demon	7	11	16
Spectre	4	9	14
Cacodemon	9	15	18
Baron of Hell	4	7	10
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	1	2	3
Chaingun	1
Rocket launcher	1
Plasma gun	1
Ammunition	1-2	3	4-5
Clip	2
Box of bullets	13	23	23
4 shotgun shells	4	9	9
Box of shotgun shells	17	27	30
Box of rockets	7	10	11
Energy cell	1	2	2
Energy cell pack	4
Health & Armor	1-2	3	4-5
Stimpack	17
Medikit	25	33	39
Armor	2	3	3
Megaarmor	2
Items	1-2	3	4-5
Armor bonus	17
Health bonus	15	17	17
Supercharge	3
Backpack	2
Berserk	4	7	7
Computer area map	1
Invulnerability	1
Light amplification visor	1
Partial invisibility	1
Radiation shielding suit	1
Keys	1-2	3	4-5
Blue keycard	1
Red keycard	1
Yellow keycard	1
Miscellaneous	1-2	3	4-5
Exploding barrel	15	15	11
Teleport landing	30

Multiplayer
Monsters	1-2	3	4-5
Zombieman	4
Shotgun guy	20	34	36
Imp	106	200	241
Demon	7	14	19
Spectre	4	10	15
Cacodemon	12	21	24
Baron of Hell	4	9	14
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	1	2	3
Chaingun	1
Rocket launcher	1
Plasma gun	1
Ammunition	1-2	3	4-5
Clip	2
Box of bullets	14	26	29
4 shotgun shells	4	9	9
Box of shotgun shells	18	29	34
Box of rockets	7	10	12
Energy cell	1	2	2
Energy cell pack	4
Health & Armor	1-2	3	4-5
Stimpack	17	19	20
Medikit	25	36	46
Armor	3	4	5
Megaarmor	2
Items	1-2	3	4-5
Armor bonus	17
Health bonus	15	17	17
Supercharge	3
Backpack	2
Berserk	4	7	7
Computer area map	1
Invulnerability	1
Light amplification visor	1
Partial invisibility	1
Radiation shielding suit	1
Keys	1-2	3	4-5
Blue keycard	1
Red keycard	1
Yellow keycard	1
Miscellaneous	1-2	3	4-5
Cooperative start	4
Deathmatch start	12
Exploding barrel	15	15	11
Teleport landing	30

Technical information[edit]

Inspiration and development[edit]

Trivia[edit]

Sources[edit]

External links[edit]

Invasion series v · t · e
Invasion... Level 1: Contamination • Invasion... Level 2: The Upper Decks • Invasion: The Siege