10 TUs by decreasing size in ACTORLIB
actorclasses.o: 5257
    MineMonster_cels_pb8: 2816
    Janitor_cels_pb8: 1304
    MonMonster_cels_pb8: 470
    enemy_setup_procs: 162
    enemy_initial_frame: 161
    enemy_to_enclass: 161
    enemy_move_procs: 100
    entryq_initial_x: 81
    enemy_initial_frame_sub: 1
    enemy_initial_facing_health: 1
baddiesmgr.o: 842
    entryq_scan: 90
    get_actor_offset_floor_ht: 82
    move_if_carried: 64
    reap_leftmost_enemy: 54
    move_thrown_object: 45
    set_front_colliding_frame_range: 41
    is_actor_near_hero: 38
    add_actor_dx: 29
    setup_fish_rfacing: 28
    add_actor_dy: 28
    update_throwable_faint: 28
    setup_fish: 27
    setup_rat_rfacing: 22
    update_2_frame_faint_now_no_new_cel: 22
    setup_rat_range_y: 20
    move_default: 19
    setup_face_hero: 18
    halve_velocity: 17
    setup_move_l8: 15
    add_a_to_dysub: 14
    reap_if_offscreen: 13
    update_2_frame_faint_now: 11
    actor_face_hero: 11
    setup_front: 10
    setup_nocollide: 10
    setup_invulnerable: 10
    countdown_to_reap: 10
    setup_invuln_nocollide: 9
    update_2_frame_faint_half_speed: 8
    update_2_frame_faint: 7
    reap_actor_x: 7
    reap_on_0hp: 7
    setup_behindbg_front: 6
    setup_rat_wide: 4
    setup_floating_head: 4
    setup_frame_sub_to_y: 4
    update_2_frame_faint_with_dy: 3
    setup_rat: 2
    add_gravity: 2
    get_actor_floor_ht: 2
    setup_null: 1
lifts.o: 517
    lifts_move_1: 215
    lifts_init_1: 111
    move_lift_core: 85
    move_hlift: 69
    move_vlift: 37
Slack: 408
    __ACTORLIB_slack__: 408
bullets.o: 326
    bullets_update: 126
    bullets_draw_cb: 114
    bullet_x_place_hitbox: 47
    make_env_bullets: 39
bosses.o: 318
    boss_palette_set_hurt: 100
    boss_palette_ptrs: 44
    boss_palette_update: 38
    boss_palette_init: 22
    steel_palette: 18
    mine_palette: 10
    crow_palette: 10
    steel_hurt_palette: 9
    hurt_0d_palette: 8
    mon_palette: 6
    bull_palette: 6
    bull_bleed_palette: 6
    janitor_palette: 6
    janitor_bleed_palette: 6
    harry_palette: 6
    harry_gone_palette: 6
    boss_palette_set_hurt_with_sound: 6
    hurt_1d_palette: 4
    hurt_19_palette: 4
    harry_lightning_palette: 3
hitbox.o: 272
    place_one_hitbox: 272
liftsdata.o: 166
    CaveNetworkHubFieldHarrys_lifts: 55
    SteelMill7_lifts: 35
    lift_types: 24
    Dungeon6_lifts: 23
    TownStreet2_lifts: 15
    SteelMill12_lifts: 11
    no_lifts: 3
river3lifts.o: 59
    river3lifts_move_actors: 59
bosssteel.o: 27
    setup_steel_mill_receptor: 27

37 TUs by decreasing size in HOME
options.o: 2329
    options_retail_menu_restart: 277
    options_show_kill_count: 269
    options_show_chapter_card: 250
    options_write_difficulty_title: 186
    options_debug_menu: 145
    show_title: 130
    options_write_music_title: 129
    options_show_dateline: 88
    options_load_font: 81
    options_load_pumpkin: 68
    puts_16: 60
    load_pbg_irq: 53
    options_handle_up_down: 53
    options_show_credits: 52
    difficultydescs: 48
    pb8arrow: 43
    bcdWrite: 43
    options_palette_nstripe: 41
    options_load_arrow: 40
    puts_multiline_16: 39
    bcdConvert_lpad_tiles: 39
    options_blink_arrow_dma: 37
    cls_puts_multiline: 31
    show_static_image: 29
    difficultytitles: 18
    options_retail_menu: 15
    options_load_palette: 14
    show_copyright: 13
    serum_soda_label_msg: 11
    show_yearbook: 11
    game_over_msg: 10
    options_retail_menu_sprite_y: 5
    load_kana_font: 1
subtitles-en.o: 2267
    endingpart3_msg: 369
    tuto_d4_msg: 165
    foundmove0_msg: 146
    foundmove2_msg: 126
    foundmove1_msg: 121
    foundmove4_msg: 116
    tuto_d5_msg: 107
    prologuemap1_msg: 97
    foundmove6_msg: 84
    foundmove3_msg: 77
    tuto_intro1_msg: 76
    dungeon12boatcut2_msg: 75
    foundmove5_msg: 64
    prologuefarmhouse_msg: 57
    prologueskip_msg: 57
    dungeonpit_msg: 54
    prologuemap2_msg: 52
    tuto_a2_msg: 47
    tuto_b1_msg: 43
    tuto_c1_msg: 38
    dungeon12boatcut1_msg: 36
    endingpart4_msg: 35
    tuto_a1_msg: 35
    tuto_d6_msg: 34
    tuto_intro2_msg: 30
    minemonster_msg: 27
    tuto_d3_msg: 27
    tuto_d2_msg: 24
    tuto_a3_msg: 19
    itsempty_msg: 15
    tuto_d1_msg: 14
main.o: 2034
    play_game: 863
    move_camera: 275
    main: 144
    check_pause: 104
    nmi_handler: 100
    view_map: 98
    pently_update_lag: 54
    sndqueue_process: 47
    level_find_something_to_draw: 41
    load_default_sprite_palette: 36
    new_game: 32
    debug_flow: 28
    draw_tagteam_mark: 27
    sndqueue_add: 27
    new_game_onslaught: 16
    initial_palette: 15
    pently_init: 15
    main_yearbook: 14
    view_password: 12
    pently_start_sound: 12
    set_draw_bank: 11
    sndqueue_init: 11
    pently_start_music: 8
    add_weight_of_a_to_x: 7
    view_buy: 6
    main_credits: 6
    view_enter_password: 6
    main_view_map: 6
    start_game: 6
    start_game_cur_level: 5
    pently_stop_music: 2
password.o: 1245
    password_input: 288
    make_password_stripe: 120
    password_display: 113
    password_draw_keyboard: 102
    pw_to_chars: 95
    chars_to_pw: 88
    unscramble_pw: 86
    scramble_pw: 82
    make_password_validity_stripe: 67
    password_load_font: 41
    password_present: 38
    unpack_pw_to_state: 32
    pack_state_to_pw: 31
    password_load_bg: 25
    validate_pw: 24
    level_section_to_chapter: 13
bgstream.o: 986
    map_decode_step: 220
    copybytes_engine: 184
    tile_decode_step: 162
    start_loading_level_bg: 145
    copycol: 126
    pbdec0_cb: 49
    pbdec_block_cb: 33
    markov_decode_cb: 33
    ibf_banky: 15
    map_decode_if_needed: 13
    pbdec_block_banky: 3
    map_decode_inc: 3
bullets.o: 939
    make_rain_bullets: 80
    make_bullet_group: 72
    make_steel_mill_fireball_bullets_window_a: 55
    bullet_dx: 43
    bullet_dy: 43
    bullet_moveclk: 43
    bullet_start_xoffset: 43
    bullet_start_yoffset: 43
    bullet_flags: 43
    bullet_sheet: 43
    bullet_frame: 43
    make_leaf_bullets: 43
    make_giant_crow_flying_bullets: 39
    make_steel_mill_bg_fireball_bullets: 30
    make_steel_mill_mouth_fireball_bullets: 30
    make_pitchfork_bullets: 24
    make_enemy_hitbox_bullets: 17
    make_bullet_group_type_y: 16
    make_tossed_bone_bullets: 15
    make_rising_bone_bullets: 15
    make_bullet_group_actor_x: 12
    bullets_init: 11
    bulletgroup_start: 10
    bulletgroup_size: 10
    bulletgroup_lifetime: 10
    find_next_free_bullet: 9
    rain_bullet: 8
    make_fish_faint_bullets: 8
    make_adult_faint_bullets: 8
    make_fireball_bullets_wo_substance: 8
    make_splat_bullets: 7
    make_substance_splat_bullets: 7
    make_fish_spawn_bullets: 7
    shockwave_bullets: 5
    splat_bullets: 4
    steel_mill_mouth_fireballs: 4
    make_shockwave_bullets: 4
    substance_splat_bullets: 3
    steel_mill_bg_fireballs: 3
    make_steel_mill_fireball_bullets: 3
    fish_spawn_bullets: 2
    fish_faint_bullets: 2
    steel_mill_fireball: 2
    giant_crow_bullet: 2
    find_free_bullet: 2
    adult_faint_bullet: 1
    skeleton_rbone_bullet: 1
    skeleton_lbone_bullet: 1
    skeleton_rrisebone_bullet: 1
    skeleton_lrisebone_bullet: 1
    leaf_bullet: 1
    blank_enemy_hitbox_bullet: 1
    pitchfork_bullet: 1
Slack: 744
    __CODE_slack__: 506
    __RODATA_slack__: 229
    __RESETCODE_slack__: 9
buymove.o: 615
    options_buy_move_menu: 423
    move_cursor_skipping_owned: 49
    reset_player_position: 49
    shockwave_demo: 27
    owned_move_demos: 14
    double_jump_demo: 9
    stf_demo: 9
    dodge_demo: 9
    slide_demo: 9
    srk_demo: 7
    charged_srk_demo: 7
    null_move_demo: 3
bossonslaught.o: 546
    OnslaughtCornfield_script: 232
    OnslaughtCave_script: 178
    OnslaughtArcade_script: 130
    onslaught_levels: 6
baddiesmgr.o: 536
    spawn_enemy: 175
    accelBrakeLimit: 144
    move_enemy: 67
    entryq_add: 45
    count_enemies_class_a: 31
    find_enemy_class_a: 24
    count_enemies: 20
    entryq_init: 18
    reap_all_enemies: 12
spritevram.o: 491
    sprload_continue: 90
    sprload_request_sheet: 72
    load_hero_cels: 52
    sheet_num_pages: 43
    unload_unused_sheets: 41
    get_sheet_slot_bits: 37
    load_spritecels_pb8_pbsrc: 36
    load_utility_cels: 34
    sprload_find_actor_slots: 34
    sprload_find_loaded_slots: 23
    sprload_ensure_sheet_y: 21
    load_spritecels_pb8_ay: 4
    sprload_ensure_actor_class_y: 4
actorclasses.o: 433
    class_to_spritesheet: 100
    enemy_move_bank: 99
    enemy_die_sound: 99
    sheet_address: 44
    sheet_frametobank: 44
    sheet_msprtables: 44
    sheet_bank: 1
    enemy_flags: 1
    enemy_hurtbox_height: 1
tilerot.o: 373
    update_tilerot_x_if_dirty: 142
    update_dirty_palrots: 106
    rot_update: 105
    rot_init: 20
irq.o: 316
    irq_screen_on: 100
    irq_update_scroll_strips: 97
    irq_split: 97
    irq_init: 22
bg.o: 234
    load_pbg0: 209
    switch_in_chr_ram: 21
    load_pbg: 4
levels.o: 227
    load_level_part3: 60
    chaptername6: 22
    chaptername7: 22
    chaptername4: 18
    chaptername1: 16
    chaptername2: 15
    chaptername3: 13
    load_level_part5: 13
    chaptername5: 10
    load_level: 10
    first_section_in_chapter: 7
    chapter_title_card_section: 7
    chapter_names_lo: 7
    chapter_names_hi: 7
heightmap.o: 193
    heightmap_decode_till_a: 149
    heightmap_query: 32
    heightmap_clear: 12
Alphabet_halves.o: 192
    alphabet_tophalves: 96
    alphabet_bottomhalves: 96
nstripe.o: 180
    nstripe_draw_rect: 83
    nstripe_blit: 74
    nstripe_init: 23
metasprite.o: 153
    find_window_for_class: 98
    find_front_prio_closest: 55
platforms.o: 143
    platforms_init_map: 45
    platforms_cull: 43
    platforms_query: 28
    platforms_seek: 19
    platforms_init_none: 8
lifts.o: 129
    lifts_draw: 78
    lifts_init: 23
    lifts_move: 10
    lifts_query: 10
    lifts_init_none: 8
hitbox.o: 123
    inc_kill_count: 73
    actor_place_one_hitbox: 50
pads.o: 109
    read_pads: 76
    autorepeat: 33
subtitle.o: 104
    subtitle_init: 58
    subtitle_end_cue: 29
    subtitle_update: 17
ftasm4c.o: 103
    _Bank_Switch: 29
    _Reset_Music2: 25
    _Play_Music: 25
    _Reset_Music: 9
    _Reset_Fx: 7
    _Play_Fx: 5
    _Music_Update: 3
walkbaddies.o: 95
    move_walker_enemy: 95
init.o: 87
    reset_handler: 79
    mmc3init_values: 8
cratestack.o: 82
    standonactor_find_vht: 78
    standonactor_find: 4
bcd.o: 80
    bcdConvert: 50
    bcdTableLo: 15
    bcdTableHi: 15
rand.o: 74
    _rand: 59
    _srand: 15
ppuclear.o: 69
    ppu_clear_nt: 34
    ppu_screen_on: 19
    ppu_clear_oam: 16
bosses.o: 44
    run_boss: 23
    boss_update_screen_shake: 15
    boss_stop_music: 6
mmc3.o: 43
    mmc3_banky: 22
    mmc3_restore_A000: 11
    mmc3_restore_bank: 10
walker.o: 35
    move_walker: 19
    move_walker_forward: 16
player.o: 22
    one_shl_x: 8
    not_1_shl_x: 8
    difficulty_starting_owned_moves: 3
    difficulty_health: 3
npc.o: 9
    ensure_partner_sprite_sheet: 9