new file mode 100644
--- /dev/null
+++ b/pytouhou/game/enemy.pxd
@@ -0,0 +1,40 @@
+from pytouhou.game.element cimport Element
+from pytouhou.utils.interpolator cimport Interpolator
+
+cdef class Enemy(Element):
+    cdef public double z, angle, speed, rotation_speed, acceleration
+    cdef public long _type, bonus_dropped, die_score, frame, life, death_flags, current_laser_id, death_callback, boss_callback, low_life_callback, low_life_trigger, timeout, timeout_callback, remaining_lives, bullet_launch_interval, bullet_launch_timer, death_anim, direction, update_mode
+    cdef public bint visible, was_visible, touchable, collidable, damageable, boss, automatic_orientation, delay_attack
+    cdef public tuple difficulty_coeffs, extended_bullet_attributes, bullet_attributes, bullet_launch_offset, movement_dependant_sprites, screen_box
+    cdef public dict laser_by_id
+    cdef public list aux_anm
+    cdef public Interpolator interpolator, speed_interpolator
+    cdef public object _game, _anms, process
+
+    cdef double[2] hitbox_half_size
+
+    cpdef play_sound(self, index)
+    cpdef set_hitbox(self, double width, double height)
+    cpdef set_bullet_attributes(self, type_, anim, sprite_idx_offset,
+                                bullets_per_shot, number_of_shots, speed, speed2,
+                                launch_angle, angle, flags)
+    cpdef set_bullet_launch_interval(self, long value, unsigned long start=*)
+    cpdef fire(self, offset=*, bullet_attributes=*, launch_pos=*)
+    cpdef new_laser(self, variant, laser_type, sprite_idx_offset, angle, speed,
+                    start_offset, end_offset, max_length, width,
+                    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 set_anim(self, index)
+    cdef void die_anim(self)
+    cdef void drop_particles(self, long number, long color)
+    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)
+    cpdef bint is_visible(self, long screen_width, long screen_height)
+    cdef void check_collisions(self)
+    cdef void handle_callbacks(self)
+    cpdef update(self)