From The TimeSplitters Wiki

Wood Golem
Unlocked by	Beat Playing With Fire with Silver
Species	Tree
Size	Large
Accuracy	7 of 10
Agility	3 of 10
Stamina	7 of 10
Fire Proof	N/A
Shock Proof	N/A
Default AI	3 Stars
Native TimeZone	1920s
First Appearance	TS2 Story Mode
Relations	N/A
Games	TS2

TS1 Gesture	N/A	TSFP Gesture	N/A
TS2 Gallery	Around the Temple, the thirsty roots of trees have sucked up the blood from a thousand human sacrifices. The souls of these ancient victims now prowl the earth bound within gnarled skins of wood.	TSFP Gallery	N/A

The Wood Golem appears in the Aztec level of TS2. In the level they can only be killed be killed by being set aflame from aflaming arrow from crossbow. They appear to be walking trees and do not have any facial features.