<s>
Zombie	B-Application
Army	I-Application
Trilogy	I-Application
is	O
a	O
third-person	O
tactical	O
shooter	O
video	O
game	O
developed	O
and	O
published	O
by	O
Rebellion	O
Developments	O
.	O
</s>
<s>
It	O
is	O
a	O
spin-off	O
to	O
the	O
Sniper	O
Elite	O
series	O
and	O
was	O
released	O
on	O
March	O
6	O
,	O
2015	O
,	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
Windows	O
,	O
and	O
Xbox	B-Device
One	I-Device
.	O
</s>
<s>
A	O
port	O
for	O
the	O
Nintendo	B-Application
Switch	I-Application
was	O
released	O
on	O
March	O
31	O
,	O
2020	O
,	O
in	O
North	O
America	O
and	O
Europe	O
,	O
and	O
in	O
Japan	O
on	O
May	O
28	O
,	O
2020	O
.	O
</s>
<s>
The	O
trilogy	O
includes	O
a	O
remastered	O
version	O
of	O
the	O
original	O
Nazi	O
Zombie	O
Army	O
and	O
its	O
sequel	O
,	O
which	O
were	O
both	O
released	O
in	O
2013	O
as	O
standalone	O
downloadable	B-Protocol
content	I-Protocol
for	O
Sniper	B-Application
Elite	I-Application
V2	I-Application
,	O
and	O
a	O
previously	O
unreleased	O
third	O
installment	O
in	O
the	O
series	O
.	O
</s>
<s>
The	O
game	O
,	O
which	O
can	O
be	O
played	O
co-operatively	O
or	O
solo	O
,	O
features	O
the	O
single-player	O
campaigns	O
of	O
the	O
first	O
two	O
Nazi	O
Zombie	O
Army	O
titles	O
,	O
alongside	O
the	O
new	O
third	O
chapter	O
,	O
combined	O
into	O
one	O
Campaign	O
mode	O
,	O
with	O
a	O
Horde	O
mode	O
similar	O
to	O
Killing	B-Application
Floor	I-Application
and	O
the	O
Left	O
4	O
Dead	O
series	O
also	O
being	O
available	O
.	O
</s>
<s>
The	O
game	O
's	O
co-operative	O
modes	O
support	O
eight	O
playable	O
characters	O
,	O
four	O
of	O
which	O
are	O
new	O
female	O
characters	O
.	O
</s>
<s>
In	O
August	O
2015	O
,	O
the	O
main	O
characters	O
of	O
both	O
games	O
in	O
the	O
Left	O
4	O
Dead	O
series	O
were	O
also	O
added	O
exclusively	O
to	O
the	O
PC	O
version	O
's	O
playable	O
character	O
roster	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Zombie	B-Application
Army	I-Application
4	I-Application
:	I-Application
Dead	I-Application
War	I-Application
,	O
was	O
released	O
on	O
February	O
4	O
,	O
2020	O
.	O
</s>
<s>
Zombie	B-Application
Army	I-Application
Trilogy	I-Application
utilises	O
similar	O
mechanics	O
to	O
Sniper	B-Application
Elite	I-Application
V2	I-Application
in	O
that	O
the	O
player	O
is	O
encouraged	O
to	O
tackle	O
enemies	O
from	O
afar	O
with	O
their	O
sniper	O
rifle	O
as	O
opposed	O
to	O
attacking	O
them	O
head-on	O
,	O
however	O
this	O
game	O
adopts	O
a	O
more	O
linear	O
level	O
design	O
,	O
with	O
a	O
reduced	O
focus	O
on	O
stealth	O
in	O
favour	O
of	O
an	O
action-oriented	O
approach	O
.	O
</s>
<s>
Some	O
items	O
can	O
also	O
trigger	O
an	O
explosion	O
when	O
shot	O
,	O
which	O
can	O
be	O
used	O
to	O
the	O
player	O
's	O
advantage	O
against	O
the	O
hordes	O
of	O
zombies	O
.	O
</s>
<s>
He	O
then	O
orders	O
the	O
execution	O
of	O
"	O
Plan	O
Z	O
"	O
-the	O
resurrection	O
of	O
all	O
the	O
Wehrmacht	O
's	O
fallen	O
soldiers	O
as	O
zombies	O
.	O
</s>
<s>
At	O
the	O
cathedral	O
,	O
they	O
find	O
an	O
SS	B-Language
occult	O
general	O
summoning	O
zombies	O
.	O
</s>
<s>
In	O
a	O
fight	O
with	O
him	O
and	O
his	O
minions	O
,	O
the	O
survivors	O
send	O
the	O
demonically-possessed	O
officer	O
back	O
to	O
Hell	O
and	O
discover	O
a	O
tunnel	O
under	O
the	O
church	O
's	O
altar	O
.	O
</s>
<s>
The	O
four	O
then	O
escape	O
through	O
the	O
U-Bahn	O
to	O
a	O
canal	O
where	O
they	O
kill	O
another	O
SS	B-Language
occult	O
general	O
and	O
escape	O
via	O
a	O
British	O
agent	O
on	O
a	O
boat	O
.	O
</s>
<s>
Once	O
retrieved	O
,	O
the	O
four	O
proceed	O
to	O
the	O
Berlin	O
Planetarium	O
,	O
where	O
they	O
discover	O
a	O
secret	O
entrance	O
to	O
Hitler	O
's	O
bunker	O
.	O
</s>
<s>
After	O
clearing	O
the	O
bunker	O
,	O
the	O
four	O
retrieve	O
the	O
second	O
piece	O
from	O
Hitler	O
's	O
office	O
.	O
</s>
<s>
The	O
four	O
hitch	O
a	O
ride	O
on	O
one	O
of	O
Hitler	O
's	O
supply	O
trains	O
and	O
take	O
it	O
straight	O
to	O
a	O
rally	O
where	O
Hitler	O
is	O
outlining	O
his	O
plans	O
for	O
the	O
new	O
Undead	O
Reich	O
.	O
</s>
<s>
Fairburne	O
attempts	O
to	O
assassinate	O
Hitler	O
,	O
only	O
for	O
the	O
bullet	O
to	O
stop	O
right	O
in	O
front	O
of	O
Hitler	O
's	O
face	O
.	O
</s>
<s>
Only	O
Schweiger	O
's	O
use	O
of	O
the	O
Relic	O
prevents	O
the	O
four	O
from	O
being	O
swarmed	O
by	O
the	O
zombies	O
at	O
the	O
rally	O
.	O
</s>
<s>
The	O
squad	O
is	O
then	O
deployed	O
to	O
infiltrate	O
the	O
Folterschloss	O
,	O
Hitler	O
's	O
private	O
mountain	O
stronghold	O
in	O
a	O
forest	O
nearby	O
.	O
</s>
<s>
Hitler	O
's	O
headquarters	O
is	O
determined	O
to	O
be	O
a	O
large	O
fortified	O
facility	O
inside	O
the	O
irradiated	O
badlands	O
outside	O
Berlin	O
,	O
which	O
the	O
group	O
infiltrates	O
.	O
</s>
<s>
The	O
quartet	O
manage	O
to	O
escape	O
as	O
Hitler	O
's	O
headquarters	O
is	O
completely	O
destroyed	O
.	O
</s>
<s>
Zombie	B-Application
Army	I-Application
Trilogy	I-Application
received	O
"	O
mixed	O
or	O
average	O
"	O
reviews	O
,	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
