These guys signed up to gain paradise.
Sounds like a case of false advertising to me.
From Iraq News:
The Syrian Democratic Forces (SDF), backed by the international coalition, revealed on Sunday that they have received intelligence information indicating that the Islamic State (IS) has began to execute its foreign elements.
Intelligence sources say that local militants do not trust the foreign ones, accusing them of spying for the international coalition and the SDF which has closed in on the group’s stronghold of Raqqa and controlled all roads leading to the city.
The IS organization therefore has recently executed a large number of its foreign militants including leaders, according to the SDF.