Can't delete file, tried everything!

I got, what seems to be, an incompatible font file after extracting the archive contents of the abandoware program "SimLife" on my desktop. The filename is "_ONTRES.FON" and I cant delete it no matter what I try.

What I tried so far:

*Simple delete using delete key - no response whatsoever
*Shift + delete - no response whatsoever
*Renaming the file - crushes explorer
*Delete using FileAssassin - crushes the program
*Delete using safe mode - no response whatsoever

It is so ridiculous its funny :p