--- a/pytouhou/game/enemy.pxd
+++ b/pytouhou/game/enemy.pxd
@@ -1,5 +1,6 @@
 from pytouhou.game.element cimport Element
 from pytouhou.game.game cimport Game
+from pytouhou.game.player cimport Player
 from pytouhou.utils.interpolator cimport Interpolator
 
 cdef class Enemy(Element):
@@ -27,16 +28,16 @@ cdef class Enemy(Element):
                     start_duration, duration, end_duration,
                     grazing_delay, grazing_extra_duration, unknown,
                     offset=*)
-    cpdef select_player(self, players=*)
-    cpdef get_player_angle(self, player=*, pos=*)
+    cpdef Player select_player(self, list players=*)
+    cpdef double get_player_angle(self, tuple pos=*, Player player=*) except 42
     cpdef set_anim(self, index)
-    cdef void die_anim(self)
-    cdef void drop_particles(self, long number, long color)
+    cdef void die_anim(self) except *
+    cdef void drop_particles(self, long number, long color) except *
     cpdef set_aux_anm(self, long number, long index)
     cpdef set_pos(self, x, y, z)
     cpdef move_to(self, duration, x, y, z, formula)
     cpdef stop_in(self, duration, formula)
-    cdef bint is_visible(self, long screen_width, long screen_height)
-    cdef void check_collisions(self)
-    cdef void handle_callbacks(self)
-    cpdef update(self)
+    cdef bint is_visible(self, long screen_width, long screen_height) except? False
+    cdef void check_collisions(self) except *
+    cdef void handle_callbacks(self) except *
+    cdef void update(self) except *